Question

state important precautions which should be followed while performing an experiment for verification of the laws of reflection of sound

Answer 1

1.Reflecting surface and screen should be held vertically on the sheet of paper.
2. Ear, ticking clock and reflecting surface should be in the same plane.
3. Utmost care should be taken while taking the measurement of angle. The measurement of angle, either it is incident or reflection must be taken between the axis of the tube and the normal.