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One face of a rectangular glass plate 6 ...

One face of a rectangular glass plate 6 cm thick is silvered. An object held 8 cm in front of the first face, forms an image 12 cm behind the silvered face. The refractive index of the glass is

A

0.4

B

0.8

C

1.2

D

1.6

Text Solution

Verified by Experts

The correct Answer is:
C
x + 8 = 12 + 6 − x
`rArr " " x `= 5 cm.
Now, `n = (t)/(x) = (6)/(5) = 1.2`
(Here x is the apparent position of silvered face)
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