Medium MCQ +4 / -1 PYQ · JEE Mains 2025

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason $\mathbf{R}$

Assertion A: In a central force field, the work done is independent of the path chosen.

Reason R: Every force encountered in mechanics does not have an associated potential energy.

In the light of the above statements, choose the most appropriate answer from the options given below

  1. A $\mathbf{A}$ is false but $\mathbf{R}$ is true
  2. B Both $\mathbf{A}$ and $\mathbf{R}$ are true but $\mathbf{R}$ is NOT the correct explanation of $\mathbf{A}$ Correct answer
  3. C $\mathbf{A}$ is true but $\mathbf{R}$ is false
  4. D Both $\mathbf{A}$ and $\mathbf{R}$ are true and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$

Solution

<p>In a central force field, the work done is independent of the path chosen, this is true because central forces are conservative forces. Every force encountered in mechanics does not have an associated potential energy this is also true because not all forces are conservative. Hence, option 2 is correct.</p>

About this question

Subject: Physics · Chapter: Work, Energy and Power · Topic: Work Done by a Force

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