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

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

Two light sources are coherent when

Can beats be observed in two light sources of nearly equal frequencies ?

At a place due to beats obtained from two sources of sound

Assertion: Light can travel in vacuum but sound cannot do so. Reason: Light is an em wave and sound is a mechanical wave.

Assertion : The sound emitted by the source travels in all directions. Reason : The relative velocity of sound with respect to the observer is the sum of velocity of sound and velocity of observer.

Assertion : Beats can be formed when the diffference in freqencies of two sources is greater than 10. Reason : Time interval between two beats should be less than 1/10 seconds to hear distinct beats.

Assertion (A) : The phase difference between any two points on a wave front is zero Reason (R ) : Light from the source reaches every point of the wave front at the same time

When the light source is moving towards an observer,