It is a common belief that the exposure of radiations for long time is dangerous to health. Are the meals cooked in microwaves oven not dangerous to health?
It is a common belief that the exposure of radiations for long time is dangerous to health. Are the meals cooked in microwaves oven not dangerous to health?
Text Solution
AI Generated Solution
### Step-by-Step Solution:
1. **Understanding Radiation Types**:
- There are different types of radiation, such as ionizing and non-ionizing radiation. Ionizing radiation (like X-rays, gamma rays, and UV rays) has enough energy to remove tightly bound electrons from atoms, which can cause damage to living tissue and DNA.
2. **Microwave Radiation**:
- Microwaves are a form of non-ionizing radiation. They operate at a frequency that is much lower than that of ionizing radiation. Microwaves work by causing water molecules in food to vibrate, generating heat that cooks the food.
...
|
Topper's Solved these Questions
ELECTROMAGNETIC WAVES
PRADEEP|Exercise Advanced Problems for Competitions|2 VideosELECTROMAGNETIC WAVES
PRADEEP|Exercise NCERT Exercise|2 VideosELECTROMAGNETIC WAVES
PRADEEP|Exercise Short Answer Questions|3 VideosELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT
PRADEEP|Exercise Multiple Choice Questions|1 VideosELECTRONIC DEVICES
PRADEEP|Exercise Fill in the Blanks|1 Videos
Similar Questions
Explore conceptually related problems
Read the following text and answer the following questions on the basis of the same: Microwave oven: The spectrum of electromagnetic radiation . contains a part known as microwaves. These waves have frequency and energy smaller than visible light and wavelength larger than it. What is the principle of a microwave oven and how does it work? Our objective is to cook food or warm it up. All food items such as fruit, vegetables, meat, cereals, etc., contain water as a constituent. Now, what does it mean when we say that a certain object has become warmer? When the temperature of a body rises, the energy of the random motion of atoms and molecules increases and the molecules travel or vibrate or rotate with higher energies. The frequency of rotation of water molecules is about 2.45 gigahertz (GHz). If water receives microwaves of this frequency, its molecules absorb this radiation, which is equivalent to heating up water. These molecules share this energy with neighbouring food molecules, heating up the food. One should use porcelain vessels and non metal containers in a microwave oven because of the danger of getting a shock from accumulated electric charges. Metals may also melt from heating. The porcelain container remains unaffected and cool, because its large molecules vibrate and rotate with much smaller frequencies, and thus cannot absorb microwaves. Hence, they do not get eaten up. Thus, the basic principle of a microwave oven is to generate microwave radiation of appropriate frequency in the working space of the oven where we keep food. This way energy is not wasted in heating up the vessel. In the conventional heating method, the vessel on the burner gets heated first and then the food inside gets heated because of transfer of energy from the vessel. In the microwave oven, on the other hand, energy is directly delivered to water molecules which is shared by the entire food. When the temperature of a body rises:
Read the following text and answer the following questions on the basis of the same: Microwave oven: The spectrum of electromagnetic radiation . contains a part known as microwaves. These waves have frequency and energy smaller than visible light and wavelength larger than it. What is the principle of a microwave oven and how does it work? Our objective is to cook food or warm it up. All food items such as fruit, vegetables, meat, cereals, etc., contain water as a constituent. Now, what does it mean when we say that a certain object has become warmer? When the temperature of a body rises, the energy of the random motion of atoms and molecules increases and the molecules travel or vibrate or rotate with higher energies. The frequency of rotation of water molecules is about 2.45 gigahertz (GHz). If water receives microwaves of this frequency, its molecules absorb this radiation, which is equivalent to heating up water. These molecules share this energy with neighbouring food molecules, heating up the food. One should use porcelain vessels and non metal containers in a microwave oven because of the danger of getting a shock from accumulated electric charges. Metals may also melt from heating. The porcelain container remains unaffected and cool, because its large molecules vibrate and rotate with much smaller frequencies, and thus cannot absorb microwaves. Hence, they do not get eaten up. Thus, the basic principle of a microwave oven is to generate microwave radiation of appropriate frequency in the working space of the oven where we keep food. This way energy is not wasted in heating up the vessel. In the conventional heating method, the vessel on the burner gets heated first and then the food inside gets heated because of transfer of energy from the vessel. In the microwave oven, on the other hand, energy is directly delivered to water molecules which is shared by the entire food. The frequency of rotation of water molecules is about:
Knowledge Check
Which of the following is not dangerous for individual health?
Which of the following is not dangerous for individual health?
A
Garbage thrown in the streets
B
Open drains
C
Stagnant water around our living place
D
Getting vaccinated against diseases
Read the following text and answer the following questions on the basis of the same: Microwave oven: The spectrum of electromagnetic radiation . contains a part known as microwaves. These waves have frequency and energy smaller than visible light and wavelength larger than it. What is the principle of a microwave oven and how does it work? Our objective is to cook food or warm it up. All food items such as fruit, vegetables, meat, cereals, etc., contain water as a constituent. Now, what does it mean when we say that a certain object has become warmer? When the temperature of a body rises, the energy of the random motion of atoms and molecules increases and the molecules travel or vibrate or rotate with higher energies. The frequency of rotation of water molecules is about 2.45 gigahertz (GHz). If water receives microwaves of this frequency, its molecules absorb this radiation, which is equivalent to heating up water. These molecules share this energy with neighbouring food molecules, heating up the food. One should use porcelain vessels and non metal containers in a microwave oven because of the danger of getting a shock from accumulated electric charges. Metals may also melt from heating. The porcelain container remains unaffected and cool, because its large molecules vibrate and rotate with much smaller frequencies, and thus cannot absorb microwaves. Hence, they do not get eaten up. Thus, the basic principle of a microwave oven is to generate microwave radiation of appropriate frequency in the working space of the oven where we keep food. This way energy is not wasted in heating up the vessel. In the conventional heating method, the vessel on the burner gets heated first and then the food inside gets heated because of transfer of energy from the vessel. In the microwave oven, on the other hand, energy is directly delivered to water molecules which is shared by the entire food. Why should one use porcelain vessels and non metal containers in a microwave oven ?
Read the following text and answer the following questions on the basis of the same: Microwave oven: The spectrum of electromagnetic radiation . contains a part known as microwaves. These waves have frequency and energy smaller than visible light and wavelength larger than it. What is the principle of a microwave oven and how does it work? Our objective is to cook food or warm it up. All food items such as fruit, vegetables, meat, cereals, etc., contain water as a constituent. Now, what does it mean when we say that a certain object has become warmer? When the temperature of a body rises, the energy of the random motion of atoms and molecules increases and the molecules travel or vibrate or rotate with higher energies. The frequency of rotation of water molecules is about 2.45 gigahertz (GHz). If water receives microwaves of this frequency, its molecules absorb this radiation, which is equivalent to heating up water. These molecules share this energy with neighbouring food molecules, heating up the food. One should use porcelain vessels and non metal containers in a microwave oven because of the danger of getting a shock from accumulated electric charges. Metals may also melt from heating. The porcelain container remains unaffected and cool, because its large molecules vibrate and rotate with much smaller frequencies, and thus cannot absorb microwaves. Hence, they do not get eaten up. Thus, the basic principle of a microwave oven is to generate microwave radiation of appropriate frequency in the working space of the oven where we keep food. This way energy is not wasted in heating up the vessel. In the conventional heating method, the vessel on the burner gets heated first and then the food inside gets heated because of transfer of energy from the vessel. In the microwave oven, on the other hand, energy is directly delivered to water molecules which is shared by the entire food. Why should one use porcelain vessels and non metal containers in a microwave oven ?
A
Because it will get too much hot.
B
Because it may crack due to high frequency.
C
Because it will prevent the food items to become hot.
D
Because of the danger of getting a shock from accumulated electric charges.
Read the following text and answer the following questions on the basis of the same: Microwave oven: The spectrum of electromagnetic radiation . contains a part known as microwaves. These waves have frequency and energy smaller than visible light and wavelength larger than it. What is the principle of a microwave oven and how does it work? Our objective is to cook food or warm it up. All food items such as fruit, vegetables, meat, cereals, etc., contain water as a constituent. Now, what does it mean when we say that a certain object has become warmer? When the temperature of a body rises, the energy of the random motion of atoms and molecules increases and the molecules travel or vibrate or rotate with higher energies. The frequency of rotation of water molecules is about 2.45 gigahertz (GHz). If water receives microwaves of this frequency, its molecules absorb this radiation, which is equivalent to heating up water. These molecules share this energy with neighbouring food molecules, heating up the food. One should use porcelain vessels and non metal containers in a microwave oven because of the danger of getting a shock from accumulated electric charges. Metals may also melt from heating. The porcelain container remains unaffected and cool, because its large molecules vibrate and rotate with much smaller frequencies, and thus cannot absorb microwaves. Hence, they do not get eaten up. Thus, the basic principle of a microwave oven is to generate microwave radiation of appropriate frequency in the working space of the oven where we keep food. This way energy is not wasted in heating up the vessel. In the conventional heating method, the vessel on the burner gets heated first and then the food inside gets heated because of transfer of energy from the vessel. In the microwave oven, on the other hand, energy is directly delivered to water molecules which is shared by the entire food. As compared to visible light microwave has frequency and energy
Read the following text and answer the following questions on the basis of the same: Microwave oven: The spectrum of electromagnetic radiation . contains a part known as microwaves. These waves have frequency and energy smaller than visible light and wavelength larger than it. What is the principle of a microwave oven and how does it work? Our objective is to cook food or warm it up. All food items such as fruit, vegetables, meat, cereals, etc., contain water as a constituent. Now, what does it mean when we say that a certain object has become warmer? When the temperature of a body rises, the energy of the random motion of atoms and molecules increases and the molecules travel or vibrate or rotate with higher energies. The frequency of rotation of water molecules is about 2.45 gigahertz (GHz). If water receives microwaves of this frequency, its molecules absorb this radiation, which is equivalent to heating up water. These molecules share this energy with neighbouring food molecules, heating up the food. One should use porcelain vessels and non metal containers in a microwave oven because of the danger of getting a shock from accumulated electric charges. Metals may also melt from heating. The porcelain container remains unaffected and cool, because its large molecules vibrate and rotate with much smaller frequencies, and thus cannot absorb microwaves. Hence, they do not get eaten up. Thus, the basic principle of a microwave oven is to generate microwave radiation of appropriate frequency in the working space of the oven where we keep food. This way energy is not wasted in heating up the vessel. In the conventional heating method, the vessel on the burner gets heated first and then the food inside gets heated because of transfer of energy from the vessel. In the microwave oven, on the other hand, energy is directly delivered to water molecules which is shared by the entire food. As compared to visible light microwave has frequency and energy
A
more than visible light.
B
less than visible light.
C
equal to visible light.
D
Frequency is less but energy is more
Similar Questions
Explore conceptually related problems
Given below are four sentences in jumbled order. Pick the option that gives their correct order. A. Some of these substances may be added to incerase the weight of food-stuffs and may not be injurious to health. B. They are often impercentible but can have far- reaching effects. C. The evil effects of adultrceration of food an our health are often slow in their onset and may go un-noticed. The danger obviously depends upon the substance added to adulterate food.
The "best health care at the lowest possible cost" should be: inclusive, make health-care providers accountable for cost and quality, achieve a reduction in disease burden, and eliminate catastrophic health expenditures for the consumer. All of this is not happening overnight simply because an audacious, nation- wide health-care programme is on the anvil. It could come about, however, if accompanied by the nuts and bolts of good governance that will support solutions and systems to achieve these objectives. In the matter of inclusion, over 15 years ago, the Vajpayee government commissioned the Institute of Health Systems (IHS), Hyderabad to develop a 'family welfare linked health insurance policy'. In 2003, the Director of the IHS Hyderabad delivered a broad-based Family Health Protection Plan (FHPP), open to all individuals. (A) The fact is that any discourse on universal health care in India gets stymied by the sheer size and ambivalence of the numbers involved. This 2003 solution of the Vajpayee-era recommended, inter alia, that good governance lies in aligning the income lines for health and housing. in other words, de-link entitlement to health care from the poverty line. In that event, the income lines for housing (updated from time to time), could be simultaneously applicable for health entitlement. The government could then proceed, as per capacity, to scale the health premium subsidy in line with housing categories - economically weaker sections (entitled to 75-90%), lower income (entitled to 50%), and middle income groups (entitled to 20%) The NHPM is pushing for hospitalisation at secondary- and tertiary-level private hospitals, while disregardii,ig the need for eligible households to first access primary care, prior to becoming 'a case for acute care'. (8) We are in danger of placing the cart before the horse. Without the stepping stone of primary health care, direct hospitalisation is a high-cost solution. Public sector health capacities are constrained at all levels. Forward movement is feasible only through partnerships and coalitions with private sector providers. These partnerships are credible only if made accountable. The National Health Policy 2017 proposed "strategic purchasing" of services from secondary and tertiary hospitals for a fee. Clearly, we need to contract-in services of those health-care providers (public and private) who are assessed as competent to provide all care for all the medical conditions specified, who wil! accept and abide by standard· treatment protocols and gu1delmes notified, as this will rule out potential for induced care/unnecessary treatment, and who will accept the AB-NHPM financial compensation package (with fixed fees per episode, and not per visit). The credo for participating private providers should be "mission not margin". Health-care providers (public/private) should~ accredited without any upper limit on the number of service providers in a given district. The annual premium for each beneficiary would be paid to those service providers, for up to one year only (renewable), as selected by beneficiaries. The resultant competition would enhance quality and keep costs in check. Upgrading district hospitals to government medical · colleges and teaching hospitals will enhance capacities at the district level. Service providers will become accountable for cost and quality if they are bound to the nuts and bolts of good governance outlined above. In the passage above, a line is given in Bold as (B) We are in danger of placing the cart before the horse. What does the author mean by this statement?
The "best health care at the lowest possible cost" should be: inclusive, make health-care providers accountable for cost and quality, achieve a reduction in disease burden, and eliminate catastrophic health expenditures for the consumer. All of this is not happening overnight simply because an audacious, nation- wide health-care programme is on the anvil. It could come about, however, if accompanied by the nuts and bolts of good governance that will support solutions and systems to achieve these objectives. In the matter of inclusion, over 15 years ago, the Vajpayee government commissioned the Institute of Health Systems (IHS), Hyderabad to develop a 'family welfare linked health insurance policy'. In 2003, the Director of the IHS Hyderabad delivered a broad-based Family Health Protection Plan (FHPP), open to all individuals. (A) The fact is that any discourse on universal health care in India gets stymied by the sheer size and ambivalence of the numbers involved. This 2003 solution of the Vajpayee-era recommended, inter alia, that good governance lies in aligning the income lines for health and housing. in other words, de-link entitlement to health care from the poverty line. In that event, the income lines for housing (updated from time to time), could be simultaneously applicable for health entitlement. The government could then proceed, as per capacity, to scale the health premium subsidy in line with housing categories - economically weaker sections (entitled to 75-90%), lower income (entitled to 50%), and middle income groups (entitled to 20%) The NHPM is pushing for hospitalisation at secondary- and tertiary-level private hospitals, while disregardii,ig the need for eligible households to first access primary care, prior to becoming 'a case for acute care'. (8) We are in danger of placing the cart before the horse. Without the stepping stone of primary health care, direct hospitalisation is a high-cost solution. Public sector health capacities are constrained at all levels. Forward movement is feasible only through partnerships and coalitions with private sector providers. These partnerships are credible only if made accountable. The National Health Policy 2017 proposed "strategic purchasing" of services from secondary and tertiary hospitals for a fee. Clearly, we need to contract-in services of those health-care providers (public and private) who are assessed as competent to provide all care for all the medical conditions specified, who wil! accept and abide by standard· treatment protocols and gu1delmes notified, as this will rule out potential for induced care/unnecessary treatment, and who will accept the AB-NHPM financial compensation package (with fixed fees per episode, and not per visit). The credo for participating private providers should be "mission not margin". Health-care providers (public/private) should~ accredited without any upper limit on the number of service providers in a given district. The annual premium for each beneficiary would be paid to those service providers, for up to one year only (renewable), as selected by beneficiaries. The resultant competition would enhance quality and keep costs in check. Upgrading district hospitals to government medical · colleges and teaching hospitals will enhance capacities at the district level. Service providers will become accountable for cost and quality if they are bound to the nuts and bolts of good governance outlined above. What is the meaning of the phrase 'Nuts and Bolts' used in the passage above?
The "best health care at the lowest possible cost" should be: inclusive, make health-care providers accountable for cost and quality, achieve a reduction in disease burden, and eliminate catastrophic health expenditures for the consumer. All of this is not happening overnight simply because an audacious, nation- wide health-care programme is on the anvil. It could come about, however, if accompanied by the nuts and bolts of good governance that will support solutions and systems to achieve these objectives. In the matter of inclusion, over 15 years ago, the Vajpayee government commissioned the Institute of Health Systems (IHS), Hyderabad to develop a 'family welfare linked health insurance policy'. In 2003, the Director of the IHS Hyderabad delivered a broad-based Family Health Protection Plan (FHPP), open to all individuals. (A) The fact is that any discourse on universal health care in India gets stymied by the sheer size and ambivalence of the numbers involved. This 2003 solution of the Vajpayee-era recommended, inter alia, that good governance lies in aligning the income lines for health and housing in other words, de-link entitlement to health care from the poverty line. In that event, the income lines for housing (updated from time to time), could be simultaneously applicable for health entitlement. The government could then proceed, as per capacity, to scale the health premium subsidy in line with housing categories - economically weaker sections (entitled to 75-90%), lower income (entitled to 50%), and middle income groups (entitled to 20%) The NHPM is pushing for hospitalisation at secondary- and tertiary-level private hospitals, while disregardii,ig the need for eligible households to first access primary care, prior to becoming 'a case for acute care'. (8) We are in danger of placing the cart before the horse. Without the stepping stone of primary health care, direct hospitalisation is a high-cost solution. Public sector health capacities are constrained at all levels. Forward movement is feasible only through partnerships and coalitions with private sector providers. These partnerships are credible only if made accountable. The National Health Policy 2017 proposed "strategic purchasing" of services from secondary and tertiary hospitals for a fee. Clearly, we need to contract-in services of those health-care providers (public and private) who are assessed as competent to provide all care for all the medical conditions specified, who wil! accept and abide by standard· treatment protocols and gu1delmes notified, as this will rule out potential for induced care/unnecessary treatment, and who will accept the AB-NHPM financial compensation package (with fixed fees per episode, and not per visit). The credo for participating private providers should be "mission not margin". Health-care providers (public/private) should~ accredited without any upper limit on the number of service providers in a given district. The annual premium for each beneficiary would be paid to those service providers, for up to one year only (renewable), as selected by beneficiaries. The resultant competition would enhance quality and keep costs in check. Upgrading district hospitals to government medical · colleges and teaching hospitals will enhance capacities at the district level. Service providers will become accountable for cost and quality if they are bound to the nuts and bolts of good governance outlined above. There is line given in BOLD in the above passage, (A) The fact is that any discourse on universal health care in India gets stymied by the sheer size and ambivalence of the numbers involved. Which of the following most nearly describes the same meaning as the original sentence and contextually fits in correctly?
The "best health care at the lowest possible cost" should be: inclusive, make health-care providers accountable for cost and quality, achieve a reduction in disease burden, and eliminate catastrophic health expenditures for the consumer. All of this is not happening overnight simply because an audacious, nation- wide health-care programme is on the anvil. It could come about, however, if accompanied by the nuts and bolts of good governance that will support solutions and systems to achieve these objectives. In the matter of inclusion, over 15 years ago, the Vajpayee government commissioned the Institute of Health Systems (IHS), Hyderabad to develop a 'family welfare linked health insurance policy'. In 2003, the Director of the IHS Hyderabad delivered a broad-based Family Health Protection Plan (FHPP), open to all individuals. (A) The fact is that any discourse on universal health care in India gets stymied by the sheer size and ambivalence of the numbers involved. This 2003 solution of the Vajpayee-era recommended, inter alia, that good governance lies in aligning the income lines for health and housing. in other words, de-link entitlement to health care from the poverty line. In that event, the income lines for housing (updated from time to time), could be simultaneously applicable for health entitlement. The government could then proceed, as per capacity, to scale the health premium subsidy in line with housing categories - economically weaker sections (entitled to 75-90%), lower income (entitled to 50%), and middle income groups (entitled to 20%) The NHPM is pushing for hospitalisation at secondary- and tertiary-level private hospitals, while disregardii,ig the need for eligible households to first access primary care, prior to becoming 'a case for acute care'. (8) We are in danger of placing the cart before the horse. Without the stepping stone of primary health care, direct hospitalisation is a high-cost solution. Public sector health capacities are constrained at all levels. Forward movement is feasible only through partnerships and coalitions with private sector providers. These partnerships are credible only if made accountable. The National Health Policy 2017 proposed "strategic purchasing" of services from secondary and tertiary hospitals for a fee. Clearly, we need to contract-in services of those health-care providers (public and private) who are assessed as competent to provide all care for all the medical conditions specified, who wil! accept and abide by standard· treatment protocols and gu1delmes notified, as this will rule out potential for induced care/unnecessary treatment, and who will accept the AB-NHPM financial compensation package (with fixed fees per episode, and not per visit). The credo for participating private providers should be "mission not margin". Health-care providers (public/private) should~ accredited without any upper limit on the number of service providers in a given district. The annual premium for each beneficiary would be paid to those service providers, for up to one year only (renewable), as selected by beneficiaries. The resultant competition would enhance quality and keep costs in check. Upgrading district hospitals to government medical · colleges and teaching hospitals will enhance capacities at the district level. Service providers will become accountable for cost and quality if they are bound to the nuts and bolts of good governance outlined above. Which of the following could be the most appropriate title for the above passage?