Question

Which two points on the wave shown in the diagram below are in phase with each other?

Answer 1

Answer:

4. B and D

Explanation:

Two points along a transverse wave (such as the one in the figure) are said to be in phase when:

- the vertical position of the two points is the same

- The oscillation of the wave is going in the same way for both points

Basically, we say that two points are in phase when they are separated by a complete cycle (one complete oscillation) of the wave.

For this wave, we see that point B and C have same displacement, but they are not in phase since in B the oscillation is going down while in C is going up.

Instead, B and D are in phase, because they are separated by one complete cycle: both points have same displacement and the oscillation is going in the same way for both of them.

Answer 2

Points B and D are in phase in the given diagram. Option D is correct.

What is a Transverse wave?

The waves in which the movement of the particles in longitudinal to the direction of the wave advances.

Two points in a transverse wave are called in-phase when,

• Have the same verticle position.

• Both points oscillate in the same direction.

Here, B and D have the same verticle position and both points are oscillating in the same direction.

Therefore, Points B and D are in phase in the given diagram.

Learn more about Transverse waves:

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