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  4. An object approaches a convergent lens from the left of the lens with a uniform speed 10 m/s and stops at the focus. The image moves

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Q. An object approaches a convergent lens from the left of the lens with a uniform speed $ 10 \,m/s $ and stops at the focus. The image moves

J & K CETJ & K CET 2018Ray Optics and Optical Instruments

Solution:

The image velocity depends on the position of the object. So, when the object moves, the velocity of image changes non-uniformly and it moves away from the lens with a non-uniform acceleration