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A double convex lens has a focal length ...

A double convex lens has a focal length of 25 cm in air. When it is dipped into a liquid of refractive index 4/3. its focal length is increased to 100 cm. Find the refractive index of the lens material.

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SL ARORA-RAY OPTICS-TYPE G
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  9. If the refractive index from air to glass is 3/2 and that from air to ...

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  11. An equiconvex lens of focal length 15 cm is cut into two equal halves ...

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  12. One face of prism of refracting angle 30^@ and refractive index 1.414 ...

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  13. An equilateral glass prism (mu = 1.6) is immersed in water (mu = 1.33)...

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  14. Calculate angle of dispersion between red and violet colours produced ...

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  15. A thin prism of 6^@ angle gives a deviation of 3^@. The refractive in...

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  16. Show that the angle of deviation produced by a thin prism is reduced t...

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  17. A prism with refracting angle 60^@ gives angle of minimum deviation, 5...

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