A boy timed 30 oscillations of a certain pendulum thrice and obtained 1min. 10s, 1min. 12s and 1min. 7s respectively.The mean period of oscillation of the p...

A boy timed 30 oscillations of a certain pendulum thrice and obtained 1min. 10s, 1min. 12s and 1min. 7s respectively.The mean period of oscillation of the pendulum is

Answer Details

The mean period of oscillation of the pendulum can be calculated by dividing the total time for the oscillations by the number of oscillations measured. In this case, the boy measured 30 oscillations three times, with times of 1min. 10s, 1min. 12s, and 1min. 7s. First, we need to convert the times to seconds: 1min. 10s = 70s 1min. 12s = 72s 1min. 7s = 67s Next, we can calculate the total time for the 90 oscillations: 70s + 72s + 67s = 209s Finally, we can calculate the mean period by dividing the total time by the number of oscillations: 209s / 90 oscillations = 2.32s Therefore, the mean period of oscillation of the pendulum is 2.32s. Answer option (C) is correct.