Question

A pendulum with a period of 1 s on Earth, where the acceleration due to gravity is g, is taken to another planet, where its period is 2s. The acceleration due to gravity on the other planet is most nearly 

(A) g/4 

(B) g/2 

(C) g 

(D) 2g 

(E) 4g

Answer 1

Correct option (A) g/4

Based on T = 2π √(L/g), ¼ g would double the period.