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A tank is filled with water to a height of 12.5 cm. The apparent depth of a needle lying at the bottom of the tank is measured by a microscope to be 9.4 cm. What is the refractive index of water? If water is replaced by a liquid of refractive index 1.63 up to the same height, by what distance would the microscope have to be moved to focus on the needle again?

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MODERN PUBLICATION-REFRACTION OF LIGHT-EXERCISE
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  2. A ray of light of frequency of 5 xx 10^(14)Hz is passed through a liqu...

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  3. A tank is filled with water to a height of 12.5 cm. The apparent depth...

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  4. Calculate the index of refraction of a liquid from the following into ...

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  5. While determining th refractive index of a liquid experimentally, he m...

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  6. The bottom of a container is a 4.0 cm thick glass (mu=1.5) slab. The c...

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  8. What is the critical anle for a ray going from glass into water?The re...

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  11. A ocnvex refracting surface of radius of curvature 20 cm separeates tw...

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  12. the radius of curvature of convex surface is 10 cm and if an object li...

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  13. One end of a cylinrical rod is grounded to a hemispherical surface or ...

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  14. A spherical refrativng suurface of denser medium (mu=1.5) is placed in...

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  15. A small object is enclosed in a spere of glass 7 cm in radius .It si s...

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  16. Fig.2.49 shows a solid glass sphere of radius 5 cm that has a small ai...

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  17. Find the surface area of a sphere of radius 14 cm.

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  18. A point object is placed in air at distance of 40 cm from concave ref...

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  19. A concave spherical surface of refractive index 3//2 is immersed in wa...

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  20. A small object is 2 cm elow the concave mensicus of wae in a test tube...

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