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Light travels through a glass plate of t...

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

A

`t mu c`

B

`t c//mu`

C

`mu c//t`

D

`mu t//c`.

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
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