Question

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 particles of the medium vibrate in phase.

• A. If both Statement I and Statement II are true and the Statement II is correct explanation of the Statement I
• B. If both Statement I and Statement II are true but the Statement II is not the correct explanation of the Statement II.
• C. If Statement I is true but Statement II is false
• D. If both the Statements are false.

Answer 1

Answer: (C)

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