Question

If a girl is standing in front of a smooth surface from which a sound is reflected, the girl may hear

Answer 1

D. Two similar sets of sounds if she is also near the source of the sound

Answer 2

Near the surface of reflection, reflected wave may interfere with incident wave leading to production of constructive and as well as destructive interference. This in turn, can result to resonance as well as enhancement of the sound intensity as the waves of reflection adds to incident wave. Therefore, the girl would higher intensity of reflected waves as compared to incident waves.

Therefore, statement A is correct.