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A ray of light is inciden rormally on a ...

A ray of light is inciden rormally on a glass slab of refractive index `mu` of thckness 'd' which is at a distance x from the glass. The ray of light takes same time to reach from source to slab and to reach from sorce to slab and to pass through the slab.
The thickness of the slab is

A

`mu/x`

B

`x/mu`

C

`mu x `

D

`(mu - 1) x`

Text Solution

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The correct Answer is:
B
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