The period of oscillation of a simple pendulum is T=2π√L/g. measured value of L is 10cm CM known to 1 mm accuracy and time for 100 oscillations of the pendulum is found using the wrist watch of 1s resolution.The periodic oscillation is about 0.5s. what is the accuracy in the determination of g?
a. 5%
b. 4%
c. 3%
d. 2%