Multiple choice

Sounds of the following amplitudes and frequency are given as measured. Identify the loudest sound and the shrillest sound.

(a) 60 dB, f (b) 65 dB, 4f (c) 75 dB, 2f (d) 80 dB, 3f

  1. (a), (b)

  2. (b), (c)

  3. (a), (c)

  4. (d), (b)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The loudness of a sound depends upon its amplitude. The higher the amplitude, the louder the sound and vice-versa. The pitch or shrillness of a sound is determined by its frequency. The higher the frequency, the shriller the sound and vice-versa. Hence, option (4) is correct.

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