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A glass convex lens has a power of +10 D...

A glass convex lens has a power of +10 D.When ths lens is totally immersed in a liquid,it acts as concave lens of focal length 50cm.Calculate the refractive index of the liquid.Given`^a mu_g=1.5`.

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MODERN PUBLICATION-REFRACTION OF LIGHT-EXERCISE
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  5. Find the ratio of the powers of a glass lens in water and in air .Give...

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  6. A glass convex lens has a power of +10 D.When ths lens is totally imme...

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  8. A concave lens is placed in contact with a convvex lens of focal lengh...

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  15. A concave lens is kept in contact with a convex lens of focal length 2...

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  16. Two lenses of power +15 D and -5 D are in contact with each other form...

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  17. Two lenses of power +15 D and -5 D are in contact with each other form...

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  18. A compound lens is made of a convex lens of power 10 D and a concave l...

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