Question

The expression for intensity of a wave is

Answer 1

the intensity is defined to be the power per unit area carried by a wave . power is the rate at which energy is transferred by the wave. In equation form intensity iss l = PA where P is the power through an area A .

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Answer 2

The expression for intensity of a wave is I = PA wherein P is the power through an area A.

Explanation:

• Intensity is described to be the power per unit area carried with the aid of using a wave.
• Power is the rate at which energy is transferred with the aid of using the wave. In equation form, intensity I is I=PA I = P A .
• It's SI unit for I is W/m2.
• The intensity (I) of a wave is described as the rate at which it transfers energy divided with the aid of using the area over which the energy is spread.
• In different words, intensity is the rate of energy flow per unit area.