Question

The loudness of a sound depends upon its.

• A. Frequency
• B. Amplitude
• C. Pitch
• D. None of these

Answer 1

The correct option is B

Amplitude

1. The loudness of a sound depends upon its amplitude.
2. The loudness of sound is directly proportional to the square of its amplitude.
3. $$\begin{gathered} Loudness=amplitud{e}^2 \\ i.eL=a^{2.} \end{gathered}$$
4. The unit of loudness is decibel (dB).

Hence, option (B) is the correct option.