JEE Main Physics question

In which case does the potential energy decrease [MP PET 1996]

(A)On compressing a spring
(B)On stretching a spring
(C)On moving a body against gravitational force
(D)On the rising of an air bubble in waterCorrect

Answer: (D)

Solution

Compressing or stretching a spring, and moving a body against gravity, all do work against a restoring/attractive force and increase the system's PE. An air

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Question ID VK-153951