Question

Define the following terms. Give their SI units. 

i. Period 

ii. Frequency 

iii. Velocity

Answer 1

i. Period (T):

The time taken by the particle of a medium to complete one vibration is called period of the wave.

SI unit: second (s)

ii. Frequency (n):

The number of vibrations performed by a particle per second is called frequency of a wave.

SI unit: hertz (Hz)

iii. Velocity (v):

The distance covered by a wave per unit time is called the velocity of the wave.

SI unit: m/s