Home Physics Optics Lenses & Optical Instruments An object is placed on the principal axis of…
Physics Optics Lenses & Optical Instruments Numeric Response
Published on: September 12, 2026

An object is placed on the principal axis of convex lens of focal length 10 cm as shown. A plane mirror is placed on the other side of lens at a distance of 20 cm. The image produced by the plane mirror is 5 cm inside the mirror. The distance of the object from the lens is____cm.

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Text Solution

Verified by Experts
The correct answer is:
30

(30)

f=10cm

On solving we get value of u as 30 cm.

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