Question

Find the correct alternative among the following, that can be deduced from the graph.

• A. Sound wave $1$ is more shrill than sound wave $2$.
• B. Sound wave $2$ is more shrill than sound wave $1$.
• C. Sound wave $2$ is louder than sound wave $1$.
• D. None of the above.

Answer 1

The correct option is B Sound wave $2$ is more shrill than sound wave $1$.

For a sound wave,
Loudness $\propto$ Amplitude and Pitch $\propto$ frequency.

From the graph given in the question, sound wave $2$ has higher frequency than the sound wave $1$. So, the shrillness of the sound wave $1$ is less than that of the sound wave $2$.

And the amplitude of sound wave $1$ is more than the amplitude of sound wave $2$. So, the loudness of sound wave $1$ is greater than the loudness of sound wave $2$.