Question

Q. 3. Match the columns :
Group A
Answers
Group 'В
১
(1) Transmission of sound
(2) Hearing of sound
(3) Source of sound
(a) Silence zone
(6) Vibrating objects
(c) Decibel
(d) Through medium
(el Nerves
(4) Intensity of sound
(5) Noise pollution​

Answer 1

Explanation:

Column A Column B

(a) Vibrations cause (iii) Sound

(b) A shriller sound is (iv) of high pitch

(c) Unit of frequency (v) hertz

(d) Unit of time period (ii) second

(e) Curtains (i) absorb sound