Class 12 Physics Wave Optics Characteristics of Waves

Characteristics of Waves

Amplitude: -

• Amplitude is the maximum displacement of the elements of the medium from their equilibrium positions as wave passes through them.
• It is denoted by A.

Phase:-

• Phase of a wave describes the state of motion as the wave sweeps through an element at a particular position.

Wavelength:-

• Wavelength is defined as the minimum distance between two consecutive crests or two consecutive troughs when in the same phase.
• It is denoted by λ.
• Time Period of a wave: -
• Time Period of a wave is the time taken through one complete oscillation. It is denoted by ’T’.
• Frequency of a wave:-
• Frequency of a wave is defined as number of oscillations per unit time. It is denoted by ν.
• ν=1/T.

• Consider two points A and B on a wave. Their positions as well as their behaviour are same. Therefore points A and B are in phase.
• Consider the points F and G their positions are same but the behaviour is totally opposite. So F and G are out of phase.

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