Question

Explain briefly about the following :

a) Wavelength

b) Frequency

c) Amplitude

Also attach a picture of the sound wave

Answer 1

frequency: a vibrating body completes a fixed no. of cycles of vibration in one sec. this no. is known as frequency.

amplitude: the maximum displacement of a vibrating body on either side of its mean position is known as amplitude

wavelength: the distance between successive crests of a wave,especially points in sound wave or electromagnetic wave ..


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Answer 2

• Wavelength:-

The distance travelled by the wave in one complete oscillation is called wavelength. It is also defined as the distance between two consecutive particles of the medium, which are in the same phase. It is denoted by λ. Its unit is cm or m.

• Frequency:-

Frequency is defined as the number of oscillation/vibration completed by a particle of the medium in one second. It is denoted by ν (pronounced as 'nu'). Its unit is hertz (Hz).

• Amplitude:-

The maximum distance travelled by a vibrating body from its mean position is known as amplitude of that vibration. It is denoted by 'a'. Its unit is metre.