Statement-1 : In the case of a stationary wave, a person hear a loud sound at the nodes as compared to the antinodes
Statement-2 : In a stationary wave all the particles of the medium vibrate in phase.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion
C. If assertion is true but reason is false.
D. If the assertion and reason both are false.

Answer

C

Explanation

The person will hear the loud sound at nodes than at antinodes. We know that at anti-nodes the displacement is maximum and pressure change is minimum while at nodes the displacement is zero and pressure change is maximum. The sound is heard due to variation of pressure.
Also, in stationary waves particles in two different segments vibrates in opposite phase.