Three measurements of the time for 20 oscillations of a pendulum give t_1 = 39.6s, t_2 39.9s and t_3 = 39.5s . The precision in the measurement is

Three measurements of the time for 20 oscillations of a pendulum give

1.	Three measurements of the time for 20 oscillations of a pendulum give t_1 = 39.6s, t_2 39.9s and t_3 = 39.5s . The precision in the measurement is
Answer» `0.1` SEC `0.01` sec `1` sec `2` sec Answer :A