JEE Main202522 Jan 2025Evening ShiftPhysicsOscillationsActual
Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : A simple pendulum is taken to a planet of mass and radius, 4 times and 2 times, respectively, than the Earth. The time period of the pendulum remains same on earth and the planet. Reason (R): The mass of the pendulum remains unchanged at Earth and the other planet. In the light of the above statem
Options
- A( A ) is false but (R) is true
- B(A) is true but (R) is false
- CBoth ( A ) and ( R ) are true and ( R ) is the correct explanation of ( A )
- DBoth (A) and (R) are true but (R) is NOT the correct explanation of (A)
Correct answer
D. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
Step-by-step solution
aligned & g= G M R^2 & g^ = G(4 M) (2 R)^2 =g aligned A is correct, R is correct ; but since T=2 g doesn't depend on mass ; R doesn't explain A .