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Model Paper 4 — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsModel Paper 41 Mark
MCQ
Assertion (A): Work done over a closed path is always zero.
Reason (R): No force is required in a closed path.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
✓

Answer

(c) A is true but R is false.
Explanation: Work done over a closed path is always zero since the displacement is zero. Hence the assertion is true. To move a particle force is always required, whether conservative or non-conservative. So, the reason is false. 

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