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For the same value of angle of incidence...

For the same value of angle of incidence, the angles of refraction in three media A, B and C are 15°, 25° and 35°, respectively. In which medium would the velocity of light be minimum?

Text Solution

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From snell.s law, `mu=(sin i)/(sin r) = c/v`
`rArr v prop sin r`, for given value of I
Smaller the angle of refraction, smaller the velocity of light in medium.
Velocity of light is minimum in medium A as the angle of refraction is minimum, i.e. 15°.
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