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A ray of light travelling in a transpara...

A ray of light travelling in a transparant medium falls on a surface separating the medium from air at an angle of incidence of `45degree`. The ray undergoes total internal reflection. If n is the refractive in index of the medium with respect to air, select the possible value (s) of n from the following:

A

1.2

B

`4//3`

C

1.4

D

1.5

Text Solution

Verified by Experts

The correct Answer is:
C
(c ) We have, sini`gtsintheta_(c)`
`therefore` `sin45^(@)gt1/nor1/sqrt2gt1/n`
`ngtsqrt2orngt1.414`
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DC PANDEY-RAY OPTICS-Checkpoint 9.3
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