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Light travels through a glass plate of t...

Light travels through a glass plate of thickness t and having refractive index `mu` . If c be the velocity of light in vacuum, time taken by the light to travel through this thickness of glass is

A

`(t)/(muc)`

B

`(tc)/(mu)`

C

`(mut)/(c)`

D

`mutc`

Text Solution

Verified by Experts

The correct Answer is:
C
`"Required time" = ("thickness of the slab")/("velocity of light in the slab")`
`= (t)/((c)/(mu)) = (mut)/(c)`
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