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The speed of light in air is 3 xx 10^(8)...

The speed of light in air is `3 xx 10^(8)` m/s. IN medium X its speed is `2 xx 10^(8)` m/s and in medium Y the speed of light is `2.5 xx 10^(8)`m/s. Calculate:
a) `._("air")n_(X)`
b) `._(x)n_(y)`

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a) `1.5` b) `1.2` c) `0.8`
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  11. The refractive indexes of four substances P,Q,R and S are 1.77, 1.52, ...

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  12. The refractive index of water is 1.33. What will be the speed of light...

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  13. The refractive index of water witih respect to air is 4/3. The refract...

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  15. The refractive index of glass with respect to air is 3/2 and the refra...

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  16. Refractive index of four media, A,B,C and D are given below: In w...

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