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 water
Correct Answer: D
Solution :
Every body have a tendency to attain the position of minimum potential energy. Air bubble in water also tries to do so, therefore on the rising of an air bubble in water energy decrease and finally bubble attains the position of minimum potential energy.
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