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A lens forms a sharp image on a screen. ...

A lens forms a sharp image on a screen. On inserting a parallel sided glass slab between the lens and the screen, it is found necessary to move the screen a distance `d` away the lens in order for the image to be sharp again. If the refractive index of the material of the slab is `mu`, the thickness of the slab is

A

`mu d`

B

`(d)/(mu)`

C

`(mu - 1) (d)/(mu)`

D

`(mu d)/(mu - 1)`

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

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