Chapter 9, Problem 7STP

To determine

To Choose: The correct option.

Answer to Problem 7STP

Option D

Explanation of Solution

Introduction:

When two waves pass through each other in the same medium, the interference of waves occurs which depends upon the phase of the waves.

When two waves travelling in a same medium interacts each other at some point, this interaction is called interference and this is of two types constructive and destructive When crest of one wave interacts with crest of other,it is constructive while it is destructive when crest of one wave interacts with trough of other or the vice versa.Thus, the option D is correct

The deviation of wave from its actual path due to change in medium is called refraction of wave.

Thus, the option A is incorrect.

The bending of wave around the corners of an obstacle is called diffraction. Thus, the option B is incorrect.

Bouncing back of a wave after hitting a surface is called reflection of wave.Thus, the option C is incorrect.

Conclusion:

Therefore, the option D is correct.