Question

The waveforms of two sound waves A and B are shown below. Choose the correct statement.

• A. Both are equally loud.
• B. A is shriller than B.
• C. Both are equally shrill.
• D. A is louder than B.

Answer 1

The correct option is C Both are equally shrill.

It is clear from the given waveforms, the amplitude of B is more than that of A. Hence, B is louder than A.
Now, as both the waveforms are completing an equal number of oscillations in equal time intervals, they will have the same frequencies. Therefore, both waveforms will be equally shrill.