Question

Multiple Choice Questions (MCQs): A)Choose the correct answer for
each of the following.
1. Noise is produced by
(a) irregular vibrations.
(b) regular vibrations.
(c) both (a) and (b).
(d) either (a) or (b).
2. The audible range of sound for
human beings is
(a) 200-2000 Hz. (b) 20-20000
Hz. (c) 20-23000 Hz.
(d) 220-20000 Hz.
3. The loudness of a sound
depends upon its
(a) amplitude. (b) pitch.
(c) medium.
(d) frequency
4. In which of the following
material is the speed of sound
maximum?
(a) Iron
(b) Sea water
(c) Freshwater
(d) Air
5. Sound cannot travel through
(a) air.
(b) water.
(c) iron.
(d) vacuum.
​

Answer 1

Answer:

irregular vibrations

20-20000

pitch

air

vaccum