Define frequency

S_(1) : Source and observer both are stationary and wind is blowing in a direction from source to observer then observer detects an apparent increases in frequency. S_(2) : Beat frequency is defined as the difference of frequency of two sources. S_(3) : Pressure node is always a displacement node and pressure antinode is always a displacement antinode.

If the frequency of the acceleration of a simple harmonic oscillator if (f_0) then the frequency of the potential energy is

Define the term collision frequency.

Define amplitude and frequency. Write their SI units.

In reference to a wave motion ,define the term frequency

Define the 'frequency' and 'time-period' of a wave. What is the relation between the two?

Define the term time period, frequency and amplitude.

Define the characteristic of sound which enables a person to differentiate between two sounds with equal loudness but having different frequency.

Define the following terms : (i) Collision frequency (ii) Half-life period of a reaction.