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A travelling microscope is focussed on a...

A travelling microscope is focussed on a mark made on a paper. When a slab of `1.45cm` thickness is placed on the marl, the microscope has to be raised through 0.49 cm to focus the mark again. Calculate the refractive index of glass.

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The correct Answer is:
1.51
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SL ARORA-RAY OPTICS-Problems For Self Practice
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  2. A rectangular tank 8m deep is full of water. By how much does the bott...

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  3. A travelling microscope is focussed on a mark made on a paper. When a ...

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  4. A printed page is kept pressed by a glass cube (mu = 1.6) of edge 6.0c...

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  5. The velocity of light in glass is 2 xx 10^(8)ms^(-1) while that in vac...

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

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  7. While determining the refractive index of a liquid experimentally, the...

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  8. A vessel contains water up to a height of 20 cm and above it an oil up...

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  9. In Fig. a plane mirror lies at a height h above the bottom of a beaker...

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  10. A cylindrical vessel of diameter 12 cm contains 800picm^(3) of water. ...

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  11. If critical angle for a material to air is 30^(@), the refractive inde...

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  12. An optical fibre (mu = 1.72) is surrounded by a glass coating (mu= 1.5...

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  13. What is the small index of refractive of the material of a right angle...

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  14. Find the maximum angle of refraction when a light ray is refracted fro...

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  15. A luminous object O is located at the bottom of a big pool of liquid o...

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  16. One end of a cylindrical rod is grounded to a hemispherical surface of...

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  17. A spherical convex surface separates object and image space of refract...

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  18. A mark placed on the surface of a sphere is viewed through glass from ...

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  19. A glass sphere of radius 15 cm has a small bubble 6 cm from its centre...

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  20. An object is placed 50 cm from the surface of a glass sphere of radius...

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