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A convex lens of focal length 15 cm and ...

A convex lens of focal length 15 cm and concave mirror of focal length 30 cm are kept their optical axes PQ and RS parallel but separated in vertical direction by 0.6 m, as shown. The distance between the lens and mirror is 30 cm. An upright object AB of height 1.2 m is placed on the optic axic PQ of the lens at a distance of 20 cm from the lens.

Find the linear magnification of the first image after refraction from the lens.

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(a) 15 cm, -3/2, (6) 0.3 cm
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