Statement-1 : Beats cannot be produced by light sources. Statement-2: Light sources have constant phase difference

Assertion : Beats can also be observed by two light sourcesas in sound. Reason : Light sources have constant phase deference.

Statement-1 : Explosions on other planets are not heard on earth Statement-2 : To hear distinct beats, difference in frequencies of two sources should be less than 10.

Statement-1 : Explosions on other planets are not heard on earth Statement-2 : To hear distinct beats, difference in frequencies of two sources should be less than 10.

Statement-1 : Explosions on other planets are not heard on earth Statement-2 : To hear distinct beats, difference in frequencies of two sources should be less than 10.

Two independent light sources cannot act as coherent sources. Why?

Statement-1: Light from two coherent sources that are not in phase does not produce an interference pattern. Statement-2: Incoherent sources do not produce a sustained interference pattern.

For interrference of light, sources must have,