For the sustained interference of light, the necessary condition is that the two sources should

For the sustained interfernce of light, the necessary condition is that the two source should :

What is sustained interference ? Write necessary conditions for it.

For steady interference of light, the two sources of light must be

For distinct interference pattern to be observed, necessary condition is that ratio of intensity of light emission by both the sources should be :

State the necessary conditions for the interference of two sound waves.

For sustained interference we need two sources which emit radiation :