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Refractive Index

The refractiv...

Question

The refractive indices of four media A, B, C and D are 1.44, 1.52, 1.65 and 1.36 respectively. When light travelling in air is incident in these media at equal angles, the angle of refraction will be the minimum : (a) in medium A (b) in medium B (c) in medium C (d) in medium D

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Solution

When light travelling in air is incident in these media at equal angles, the angle of refraction will be the minimum in medium with highest refractive index.
i.e. 1.65 (c) in medium C

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Refractive indices of four media A, B, C and D are given below:

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A	1.33
B	1.44
C	1.52
D	1.65

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D	1.65

In which of the four media is the speed of light (i) maximum (ii) minimum?

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