Question

Which of the following statements is correct regarding the graphs shown? (Assume that the graphs are drawn to the same scale.)

• A. Both the waves have the same frequency.
• B. The frequency of wave A is higher than that of wave B.
• C. The amplitude of wave A is higher than that of wave B.
• D. Both the waves have the same amplitude.

Answer 1

The correct option is D Both the waves have the same amplitude.

From the graphs shown, both the waves have the same amplitude, i.e., 4 units on the pressure axis.
Wave A completes one oscillation in the same time taken for wave B to complete two oscillations. Thus, the frequency of B is higher than that of wave A.