Question

1.what is the time period of an vibrating object

2. What is meant by the frequency of a sound wave

Answer 1

1) One complete to and fro movement of the pendulum bob is called one vibration or one oscillation.

The time taken by pendulum bob to complete one vibration or one oscillation is called the time period of pendulum.

The time taken by a vibrating object to complete one vibration is called its time period.

2) Frequency is the speed of the vibration, and this determines the pitch of the sound. It is only useful or meaningful for musical sounds, where there is a strongly regular waveform. Frequency is measured as the number of wave cycles that occur in one second. The unit of frequency measurement is Hertz (Hz for short).