Question

what is phase in physics?​

Answer 1

In physics, the term phase has two distinct meanings. ... If we think of a wave as having peaks and valleys with a zero-crossing between them, the phase of the wave is defined as the distance between the first zero-crossing and the point in space defined as the origin.

Answer 2

$\Large{\underline{\underline{\bf{Solution :}}}}$

★ Phase :

All the points on a wave which are in the same state of vibration are said to be in the same phase. Now, see the attached image.

(a) Points B, F and J are in the same phase – all lie on the crests.

(b) Points D and H are in the same phase both lie on the troughs.

(c) Points A, E and I are in the same phase. All these points are just about to start their vibration in the upward direction from their mean positions.

(d) Points C, G and K are in the same phase. All these points are just about to start their vibration in the downward direction from their mean positions.