Home
Class 12
PHYSICS
Hard X-rays for the studdy of fractures ...

Hard X-rays for the studdy of fractures in bones shjold have a minimum waelength of `10^(-11) m.`The accelerating voltage for electrons in x-ray machine should be

A

`lt124.2 KV`

B

`gt124.2 kV`

C

between 60 kV and 70 kV

D

`= 100 kV`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • UNIT TEST -07

    MODERN PUBLICATION|Exercise EXERCISE|154 Videos
  • UNIT TEST -06

    MODERN PUBLICATION|Exercise EXERCISE|461 Videos
  • UNIT TEST-05

    MODERN PUBLICATION|Exercise EXERCISE|69 Videos

Similar Questions

Explore conceptually related problems

Find the minimum wavelength of X-rays produced by 30 kV electrons.

(a) An X-ray tube produces a continuous spectrum of radiation with its short wavelength end at 0.45 . What is the maximum energy of a photon in the radiation? (b) Form your answer to (a), guess what order of accelerating voltage (for electrons) is required in such a tube.

The existence of negatively charged particle in an atom was shown by J.J. Thomson as a result of the studies of the passage of electricity through gases at extremely low pressure known as discharge tube experiments. When a high voltage of the order of 10,000 volts or more was impressed across the electrodes, some sort of invisible rays moved from the negative electrode to the positive electrode these rays are called as cathode rays. Cathode rays travel in straight path in absence of electrical and magnetic field . Cathode rays consist of material part and charged particles? Cathode rays produce X-rays and light is emitted when they strike on ZnS screen. Cathode rays penetrate through thin sheets of aluminium and other metals . They affect the photogenic plate and passes heating effect when they strike on metal foil. The raito of charge to mass i.e charge/mass is same for all the cathode rays irrespective of the gas used in the tube. The existence of positively charged particle in an atom was shown be E. Goldstein. He repeated the same discharge tube experiments by using a perforated cathode. It was observed that when a high potential difference was applied between the electrodes, not only cathode rays were produced but also a new type of rays were produced simultaneoulsy from anode moving towards cathode and passes through the holes or canal of the cathode. These termed as canal rays or anode rays. These rays travel in straight lines and consists of positively charged particles. These rays have kinetic energy and produces heating effect also. The e/m ratio of these rays is smaller than that of electrons. Unlike cathode rays, their e/m value is dependent upon the nature of the gas taken in the tube. These rays produced flashes of light on ZnS screen and can pass throughs thin metal foils. They can produce physical and chemical changes and are capable to produce ionisation in gases. For cathode rays the value of e/m:

The existence of negatively charged particle in an atom was shown by J.J. Thomson as a result of the studies of the passage of electricity through gases at extremely low pressure known as discharge tube experiments. When a high voltage of the order of 10,000 volts or more was impressed across the electrodes, some sort of invisible rays moved from the negative electrode to the positive electrode these rays are called as cathode rays. Cathode rays travel in straight path in absence of electrical and magnetic field . Cathode rays consist of material part and charged particles? Cathode rays produce X-rays and light is emitted when they strike on ZnS screen. Cathode rays penetrate through thin sheets of aluminium and other metals . They affect the photogenic plate and passes heating effect when they strike on metal foil. The raito of charge to mass i.e charge/mass is same for all the cathode rays irrespective of the gas used in the tube. The existence of positively charged particle in an atom was shown be E. Goldstein. He repeated the same discharge tube experiments by using a perforated cathode. It was observed that when a high potential difference was applied between the electrodes, not only cathode rays were produced but also a new type of rays were produced simultaneoulsy from anode moving towards cathode and passes through the holes or canal of the cathode. These termed as canal rays or anode rays. These rays travel in straight lines and consists of positively charged particles. These rays have kinetic energy and produces heating effect also. The e/m ratio of these rays is smaller than that of electrons. Unlike cathode rays, their e/m value is dependent upon the nature of the gas taken in the tube. These rays produced flashes of light on ZnS screen and can pass throughs thin metal foils. They can produce physical and chemical changes and are capable to produce ionisation in gases. Which is not true with respect to cathode rays?

The existence of negatively charged particle in an atom was shown by J.J. Thomson as a result of the studies of the passage of electricity through gases at extremely low pressure known as discharge tube experiments. When a high voltage of the order of 10,000 volts or more was impressed across the electrodes, some sort of invisible rays moved from the negative electrode to the positive electrode these rays are called as cathode rays. Cathode rays travel in straight path in absence of electrical and magnetic field . Cathode rays consist of material part and charged particles? Cathode rays produce X-rays and light is emitted when they strike on ZnS screen. Cathode rays penetrate through thin sheets of aluminium and other metals . They affect the photogenic plate and passes heating effect when they strike on metal foil. The raito of charge to mass i.e charge/mass is same for all the cathode rays irrespective of the gas used in the tube. The existence of positively charged particle in an atom was shown be E. Goldstein. He repeated the same discharge tube experiments by using a perforated cathode. It was observed that when a high potential difference was applied between the electrodes, not only cathode rays were produced but also a new type of rays were produced simultaneoulsy from anode moving towards cathode and passes through the holes or canal of the cathode. These termed as canal rays or anode rays. These rays travel in straight lines and consists of positively charged particles. These rays have kinetic energy and produces heating effect also. The e/m ratio of these rays is smaller than that of electrons. Unlike cathode rays, their e/m value is dependent upon the nature of the gas taken in the tube. These rays produced flashes of light on ZnS screen and can pass throughs thin metal foils. They can produce physical and chemical changes and are capable to produce ionisation in gases. Select the incorrect statement.

X-ray diffranction studies show that copper crystallises in an fcc unit cell with cell edge of 3.608x10^(-8) cm. In a separate experment, copper is determined to have a density of 8.92 g cm^-3 , calculate the atomic mass of copper.

If the lowest energy X-rays have lambda=3.055xx10^(-8) m, estimate the minimum difference in energy between two Bohr's orbits such that an electronic transition would correspond to the emission of an X-ray. Assuming that the electrons in other shells exert no influence, at what Z (minimum) would a transition form the second level to the first result in the emission of an X-ray?

Experimental observations have shown that X-rays travel in vacuum with a speed of 3 xx 10^8 m s^(-1) . What conclusion can be drawn about the nature of X-rays from this observation?

MODERN PUBLICATION-UNIT TEST -07-EXERCISE
  1. the speed of an electron having a wavelenth of 10^(-10) m is

    Text Solution

    |

  2. Which of following graphs correctly represents the variation of partic...

    Text Solution

    |

  3. Hard X-rays for the studdy of fractures in bones shjold have a minimum...

    Text Solution

    |

  4. We sidh to see inside an atom.Assuming the atom to have a diameter of ...

    Text Solution

    |

  5. Directions.In the following question, a statement of asertion followed...

    Text Solution

    |

  6. Directions.In the following question, a statement of asertion followed...

    Text Solution

    |

  7. Directions.In the following question, a statement of asertion followed...

    Text Solution

    |

  8. Directions.In the following question, a statement of asertion followed...

    Text Solution

    |

  9. Directions.In the following question, a statement of asertion followed...

    Text Solution

    |

  10. Directions.In the following question, a statement of asertion followed...

    Text Solution

    |

  11. Directions.In the following question, a statement of asertion followed...

    Text Solution

    |

  12. Directions.In the following question, a statement of asertion followed...

    Text Solution

    |

  13. Directions.In the following question, a statement of asertion followed...

    Text Solution

    |

  14. Directions.In the following question, a statement of asertion followed...

    Text Solution

    |

  15. Directions.In the following question, a statement of asertion followed...

    Text Solution

    |

  16. Directions.In the following question, a statement of asertion followed...

    Text Solution

    |

  17. Directions.In the following question, a statement of asertion followed...

    Text Solution

    |

  18. Directions.In the following question, a statement of asertion followed...

    Text Solution

    |

  19. What is incorrect photon?

    Text Solution

    |

  20. The energy fof an X - ray photon is 2 keV,then the frequency (in per s...

    Text Solution

    |