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A biconvex lens of focal length 15 cm is in front of a plane mirror. The distance between the lens and the mirror is 10

A biconvex lens of focal length 15 cm is in front of a plane mirror. The distance between the lens and the mirror is 10 cm. A small object is kept at a distance of 30 cm from the lens. The final image is

(a) virtual and at a distance of 16 cm from the mirror

(b) real and at a distance of 16 cm from the mirror

(d) real and at a distance of 20 cm from the mirror

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