What is the frequency of oscillation of a simple pendulum which makes 50 oscillations in 24.4 seconds?

The period of oscillation is the time taken for one complete oscillation. The frequency of oscillation, f, is the reciprocal of the period: f = 1 / T, where T is the period. In this case, the period T = 24.4 seconds / 50 oscillations = 0.488 seconds. Therefore, the frequency of oscillation is f = 1 / 0.488 seconds ≈ 2.05 Hz.