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A light ray from air is incident (as sho...

A light ray from air is incident (as shown in figure) at one end of a glass fiber (refractive index m=1.5) making at incidence angle of `60^@` on the lateral surface, so that it undergoes a total internal reflection. How much time would it take to transverse the straight fiber of length 1km

A

`3.33 mu sec`

B

`6.67 mu sec`

C

`3.85mu sec`

D

`5.77mu sec`

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-RAY OPTICS -EXERCISE III
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