An object is placed 20cm from a concave mirror of focal length 10cm. The linear magnification of the image produced is?

m.

49. An object is placed 20cm from a concave mirror of focal length 10cm. The linear magnification of the image produced is?
A. 0
B. 1/2
C. 1
D. 2

Correct Option: Answer is C

1/v= 1/f – 1/u
1/v = 1/10 – 1/20

= 1/20 V
V = 20cm.
M = VU
= 20/20
= 1

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