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A ray of light travelling in a transpare...

A ray of light travelling in a transparent medium f refractive index `mu`, falls on a surface separating the medium from air at an angle of incidence of `45^(@)`. For which of the following value of `mu` the ray can undergo total internal reflection ?

A

`mu=1.33`

B

`mu=1.41`

C

`mu=1.50`

D

`mu=1.25`

Text Solution

Verified by Experts

The correct Answer is:
B
(b) For total internal reflection,
i`gt`C
`rArr sinigtsinCrArrsin45^(@)gt1/mu`
`rArrmugtsqrt2rArrmugt1.414`
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