Question

Tick the right option.
1. Sound cannot travel in
(a) air
(d) vacuum
(b) solid O (c) liquid
2. Frequency of sound is measured in
(a) decibel
(b) hertz
(c) amperes
(d) seconds
3. The audible range of frequency in man is
(a) 200-2000Hz (b) 20-10,000 Hz (c) 20-5000Hz o (d) 20-20,000 Hz​

Answer 1

Answer:

Q1..

b) solid

Q2..

d) Seconds

Q3..

d) 20-20000 Hz

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Answer 2

Explanation:

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