A simple pendulum is set into oscillation and a student records its motion.
Answer the following questions based on the observations below:
a. (i) Define (a) frequency and (b) time period of an oscillatory motion.
b. (ii) The pendulum completes 80 complete oscillations in 2min. Calculate its frequency and time period.
c. (iii) While carrying out such an experiment, the student is advised to count a large number of oscillations instead of just one. Explain why this practice gives a more accurate value of the time period.