Published by:
CGP EDU Academic Team
Published on: September 13, 2026
A thin cylindrical rod of length 10 cm is placed horizontally on the principle axis of a concave mirror of focal length 20 cm. The rod is placed in a such a way that mid point of the rod is at 40 cm from the pole of mirror. The length of the image formed by the mirror will be 
cm. The value of x is
Text Solution
Verified by ExpertsThe correct answer is:
32
(32)
U A = -45 cm, f= -20 cm
And U B = - 35cm
V A -V B = length of image
cm
cm
= 
cm
x = 32
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