This question was previously asked in

Airforce Group X 13 Jul 2021 Shift 1 Memory Based Paper

Option 1 : amplitude

__CONCEPT:__

The intensity of waves:

- The i
**ntensity of waves (called Irradiance in Optics)**is defined as the**power delivered per unit area**.- The unit of Intensity will be W.m-2.

- The intensity of the wave is directly proportional to the square of the amplitude, which is given by

⇒ I ∝ A2

Where I = intensity of wave, A = Amplitude

__EXPLANATION__:

- From the above, it is clear that the
**Intensity of light depends upon amplitude**. Therefore option 1 is correct.

__Additional Information__

- When two waves superimposed which are having amplitude A1 and A2, then the maximum intensity is given by

\(\Rightarrow I_{Max } = (\mid A_{Max} +A_{Min} \mid)^{2}\)

- The minimum intensity is given by

\(\Rightarrow I_{Min } = (\mid A_{Max} - A_{Min} \mid)^{2}\)