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If the refractive index of diamond is 2....

If the refractive index of diamond is 2.42, prove that all the beam of rays having angle of incidence more than `25^(@)` will be totally reflected. `[sin24.41^(@)` = 0.4132]

Text Solution

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If the critical angle be `theta_(c)` then,
`sintheta_(c) = (1)/(mu) = (1)/(2.42) = 0.4132 = dsin 24.41^(@)`
We know that if the angle of incidence of a ray of light than the critical angle, the ray will be totally reflected. Here the critical angle is 24.41^(@). so rays of light having angle of incidence greater than `25^(@)` will be total reflected .
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