If a simple pendulum makes 20 oscillations in 4 seconds,what is its frequency ? Share with your friends Share 0 Saksham Garg answered this Dear Student, Frequency = No. of oscillations / Time 》 Frequency = 20/4 = 5 Oscillations per second Regards 4 View Full Answer A.b.kanika answered this Frequency = No. of oscillations/time taken = 20/4 = 5 Hz. 4