NEET UG PHYSICS MCQ: WORK-ENERGY-POWER

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A spring when stretched by 2 mm its potential energy becomes 4 J. If it is stretched by 10 mm, its potential energy is equal to

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Correct option: D

None

None is correct because the potential energy is proportional to the square of the stretch, and stretching it 5 times more (from 2mm to 10mm) will result in 25 times more potential energy, which is 100J.

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