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An object is placed at a distance of 15 ...

An object is placed at a distance of 15 cm from a convex lens of focal length 10 cm. On the other side of the lens, a convex mirror is placed at its focus such that the image formed by the combination coincides with the object itself. The focal length of the convex mirror is

A

20 cm

B

10 cm

C

15 cm

D

30 cm

Text Solution

Verified by Experts

The correct Answer is:
B
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