Statement I: In the case of a stationary wave, a person hear a loud sound at the nodes as compared to the antinodes.
Statement II: In a stationary wave all the panicles of the medium vibrate in phase.

Moderate

A

If both statement I and statement II are true and statement II is the correct explanation of statement I.
B

If both statement I and statement II are true but statement II is not the correct explanation of statement I.
C

If statement I is true but statement II is false
D

If both statement I and statement II are false

Solution

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 segment vibrates in opposite phase.

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