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An air bubble in a glass slab with refra...

An air bubble in a glass slab with refractive indx 1.5 (near normal incidence) is 5cm deep when veiwed rom one surface and 3cm deep when viewed from the opposite face. The thickness (in cm) of the slab is

A

8

B

10

C

12

D

16

Text Solution

Verified by Experts

The correct Answer is:
C
`d_(sp)=(d_(ac))/(mu)`
`(5+3)=(d_(ac))/(1.5)`
`d_(ac)=(5+3)(1.5)=12cm`
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