Question

Write T for true and F for false statements.
1. Sound is produced by a vibrating body.
2. All objects produce same type of sound.
3. Guitar is a musical instrument
4. The number of complete waves or cycles produced by a vibrating body in one second is called frequency.
5. The pitch of a sound is independent of the frequency of vibrations.
6. Flute is a stringed instrument.
7. The loudness of sound is a measure of the sound energy reaching the ear per second.
8. Loudness of a sound depends on the area of vibrating body only.
9. Hertz is the unit used to measure the intensity of loudness.
10. Noise pollution can cause permanent hearing loss.
11. Quality of sound is different for different instruments.
12. Humans can hear sound from 20 dB to 180 dB.​

Answer 1

Answer:

true

false

true

true

false

false

true

true

false

true

true

false

Answer 2

Answer:

1 True

2 false

3 true

5 false

6 false

7 true

8 false

9 false

10 true

11 true

12 false

4 true