Q

An object is placed in front of a concave lens of focal length 15 cm and an image is formed at 7.5 cm. What is the magnification?

RRB Group-D 06/10/2022 / Shift-I 2022
✓ Answer: A 0.50
With f = -15 cm and v = -7.5 cm, 1/u = 1/v - 1/f = -1/15, so u = -15 cm. Thus m = v/u = 0.50.
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