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Velocity of light in a liquid is 1.5 xx ...

Velocity of light in a liquid is `1.5 xx 10^8 ms^(-1)` and in air,it is `3xx10^8 m s^(-1)`.If a ray of light passes from this liquid to air ,calculate the value of critical angle.

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MODERN PUBLICATION-REFRACTION OF LIGHT-EXERCISE
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