JEE Main 20208 Jan, Evening shiftPhysicsMediumOscillations and Waves185× since 2002
A simple pendulum is being used to determine
th value of gravitational acceleration g at a
certain place. Th length of the pendulum is
25.0 cm and a stop watch with 1s resolution
measures the time taken for 40 oscillations to
be 50 s. The accuracy in g is :