Q15. A simple pendulum completes one oscillation in 4 seconds. Calculate its length when g= 9.8 m/s2, as the time period of a simple pendulum is given by T = 2 π √(l/g) Physics — Oscillations and Simple Harmonic Motion — Question 15 of 102A. 3.973 m B. 5.123 m C. 7.111 m D. 9.231 m E. 12.141 m Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →