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A mark on the surface of a glass spehre ...

A mark on the surface of a glass spehre `(mu=1.5)` is viewed from a diametrically opposite position. It appears to be at a distance 10 cm from its actual position. The radius of the sphere is

A

5cm

B

10cm

C

15cm

D

25cm

Text Solution

Verified by Experts

The correct Answer is:
A
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