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An object is placed 20cm from a concave mirror of focal l...

An object is placed 20cm from a concave mirror of focal length 15cm. Calculate the linear magnification of the image formed

A.

0.5

B.

1.5

C.

2.0

D.

3.0

Correct answer is D

1U+1V=1F

1V=1F1U

1V=115120

1V=4 - 360


1V=160

V = 60cm

M = VU=6020

M = 3.0cm