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The focal length of a planoconvex glass ...

The focal length of a planoconvex glass lens is 20 cm `(mu_(g)=1.5)`. The plane face of it is silvered. An illuminating object is placed at a distance of 60 cm from the lens on its axis along the convex side. Then the distance (in cm) of the image is

A

20

B

30

C

40

D

12

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The correct Answer is:
D
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AAKASH INSTITUTE-RAY OPTICS AND OPTICAL INSTRUMENTS-ASSIGNMENT (SECTION - A)
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