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WBJEE 2019 Physics Solved Paper

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Question : 28

Total: 40

A point object is placed on the axis of a thin convex lens of focal length 0.05 m at a distance of 0.2 m from the lens and its image is formed on the axis. If the object is now made to oscillate along the axis with a small amplitude of A cm, then what is the amplitude of oscillation of the image ?
[ you may assume,

≈ 1 - x, where x << 1 ]

4A
9
×10−2 m
5A
9
×10−2 m
A
3
×10−2 m
A
9
×10−2 m

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