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Refractive Index

The refractiv...

Question

The refractive indices of substances P,Q, Rand S are 1.38, 1.46, 1.56 and 1.24 respectively. When light travelling in air is incident on these substances at equal angles, the angle of refraction will be maximum in

A

P

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B

Q

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C

R

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D

S

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Solution

The correct option is D S

The angle of refraction( $r$ ) will be the maximum when the light bends the least on changing the medium. This will happen when the refraction index of the medium is the least.
Thus, the angle of refraction will be maximum in the medium of refractive index 1.24.

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