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JEE Main202529 Jan 2025Morning ShiftPhysicsOscillationsActual

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Time period of a simple pendulum is longer at the top of a mountain than that at the base of the mountain. Reason (R): Time period of a simple pendulum decreases with increasing value of acceleration due to gravity and vice-versa. In the light of the above statements, choose the most appropriate

Options

  1. ABoth (( A ) ) and (( R ) ) are true and (( R ) ) is the correct explanation of (( A ) )
  2. B(A) is true but (R) is false
  3. C(A) is false but (R) is true
  4. DBoth (( A ) ) and (( R ) ) are true but (( R ) ) is not the correct explanation of (( A ) )

Correct answer

A. Both (( A ) ) and (( R ) ) are true and (( R ) ) is the correct explanation of (( A ) )

Step-by-step solution

As h increases, g decreases, T increases aligned & T =2 ~g & ~g = g ₀ R ^2 ( R + h )^2 aligned

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