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Work, Energy, and Power — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsWork, Energy, and Power1 Mark
MCQ
In which case does the potential energy decrease?
  • A
    On compressing the spring.
  • B
    On stretching a spring.
  • C
    On moving a body against gravitational pull.
  • D
    On the raising of an air bubble in water.
✓

Answer

  1. On the raising of an air bubble in water.

Explanation:

P.E. decreases when an air bubble rises in water. Because work is done by upthrust.

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