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In the garden, earthworm can be traced b...

In the garden, earthworm can be traced by their faecal deposits known as-

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By processing on wastes of used product, new materials can be produced this process is known as ..........

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The lens governing the behavior of the rays namely rectilinear propagation laws of reflection and refraction can be summarised in one fundamental law known as Fermat's principle. According to this principle a ray of light travels from one point to another such that the time taken is at a stationary value (maximum or minimum). if c is the velocity of light in a vacuum the velocity in a medium of refractive index mu is (c)/(mu) hence time taken to travel a distance l is (mul)/(c) if the light passes through a number of media, the total time taken is ((1)/(c))summul or (1)/(c)intmudl if refractive index varies continuously. Now summul is the total path, so that fermat's principle states that the path of a ray is such that the optical path in at a stationary value. this principle is obviously in agreement with the fact that the ray are straight lines i a homogenous isotropic medium. it is found that it also agrees with the classical laws of reflection and refraction. Q. If refractive index of a slab varies as mu=1+x^(2) where x is measured from one end then optical path length of a slab of thickness 1 m is

The lens governing the behavior of the rays namely rectilinear propagation laws of reflection and refraction can be summarised in one fundamental law known as Fermat's principle. According to this principle a ray of light travels from one point to another such that the time taken is at a stationary value (maximum or minimum). if c is the velocity of light in a vacuum the velocity in a medium of refractive index mu is (c)/(mu) hence time taken to travel a distance l is (mul)/(c) if the light passes through a number of media, the total time taken is ((1)/(c))summul or (1)/(c)intmudl if refractive index varies continuously. Now summul is the total path, so that fermat's principle states that the path of a ray is such that the optical path in at a stationary value. this principle is obviously in agreement with the fact that the ray are straight lines i a homogenous isotropic medium. it is found that it also agrees with the classical laws of reflection and refraction. Q. The optical path length followed by ray from point A to B given that laws of refraction are obeyed as shown in figure.

The lens governing the behavior of the rays namely rectilinear propagation laws of reflection and refraction can be summarised in one fundamental law known as Fermat's principle. According to this principle a ray of light travels from one point to another such that the time taken is at a stationary value (maximum or minimum). if c is the velocity of light in a vacuum the velocity in a medium of refractive index mu is (c)/(mu) hence time taken to travel a distance l is (mul)/(c) if the light passes through a number of media, the total time taken is ((1)/(c))summul or (1)/(c)intmudl if refractive index varies continuously. Now summul is the total path, so that fermat's principle states that the path of a ray is such that the optical path in at a stationary value. this principle is obviously in agreement with the fact that the ray are straight lines i a homogenous isotropic medium. it is found that it also agrees with the classical laws of reflection and refraction. Q. The optical length followed by ray from point A to B given that laws of reflection are obeyed as shown in figure is

How can the resultant effect of motion can be known ?

A fruit grower can use two types of fertilizer in his garden, brand P and brand Q. The amounts (in kg) of nitrogen, phosphoric acid, potash, and chlorine in a bag of each brand are given in the table. Tests indicate that the garden needs at least 240 kg of phosphoric acid, at least 270 kg of potash and at most 310 kg of chlorine. If the grower wants to minimise the amount of nitrogen added to the garden, how many bags of each brand be used ? What is the minimum amount of nitrogen added in the garden ?

The appliance with the help of which electricity can be generated is known as …….. .

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By what name the first segment of earthworm is known ?

ALLEN -EARTHWORM-EXERCISE-2
  1. Septal nephridia of earthworm open in-

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  2. Structures present only in 7^(th) and 9^(th) segments of pheretima po...

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  3. What is the functions of dorsal blood vessel in pheretima-

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  4. The function of blood glands in pheretima.

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  5. In pheretima posthuma female genital pore is present in which segment-

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  6. In pheretima posthuma pharyngeal nephridia are present in

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  7. Typholosole of pheretima can be found in-

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  8. The typhlosole of earthworm is related with-

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  9. Blood vessel in earthworm which has valve is-

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  10. Clitellum of pheretima is primarily concerned with-

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  11. Segment having male genital pore in earthworm-

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  12. In pheretima the testis are located in which segments.

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  13. In pheretima accessory glands are present in which segments-

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  14. In earthworm, which type of structure regulate the volume and composit...

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  15. In the garden, earthworm can be traced by their faecal deposits known ...

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  16. In earthworm the dorsal surface of the body is marked by a dark median...

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  17. Arrange the external opening and their segmental number of pheretima-

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  18. The enteronephric nephridia of earthworm are mainly concerned with

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  19. In earthworm and cockroach which type of structure is common-

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  20. Blood is red but without RBCs. Such blood is found in

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