question_answer

The diagram shows the positions of the air particles due to propagation of sound, represented by straight lines, at a particular instant from P to Q.

Which of the following statements correctly depicts the pressure variation with respect to distance?

     

A) The lines which are closed to one another represent rarefaction which is a low pressure region.

B) The lines which are far apart from one another represent compression which is a low pressure region.

C) The lines which are far apart from one another represent rarefaction which is high pressure region.

D) The lines which are closed to one another represent compression which is a high pressure region.

Correct Answer: D

Solution :

The lines which are closed to one another represent compression which is a high pressure region. The lines which are far apart from one another represent rarefaction which is low pressure region.