Question

IV. Choose the correct answers

1. The sound produced in our normal conversation is about ( )

A) 60dB B) 70dB C) 75dB D) 80dB

2. A vibrating body produces ( )

A) sound B) light C) magnetism D) electricity

3. Vibraing part in drum instrument ( )

A) string B) membrane C) wind D) all of these

4. Sound can travel through ( )

A) solids B) liquids C) gases D) all of these

5. Sound of which of the following frequecy, can you hear ? ( )

A) 5 Hz B) 12 Hz C) 15000 Hz D) 50000 Hz

6. Unit of frequency ( )

A) Decibel B) Hertz C) Pascal D) Newton

7. Sound of frequency 426Hz, is of lower pitch than sound of frequency ( )

A) 10 Hz B) 256 Hz C) 512 Hz D) 1 Hz

8. Example to stringed instrument ( )

A) Guitar B) Drum C) Flute D) Tabla

9. The following characteristics of the sound on the amplitude of vibration ( )

A) Speed B) Pitch C) Loudness D) Quality

10. Pitch of the voice is more in ( )

A) Lion B) man C) woman D) insect ​

Answer 1

A) 60dB

A) sound

A) string

While 20 to 20,000Hz forms the absolute borders of the human hearing range, our hearing is most sensitive in the 2000 - 5000 Hz frequency range. As far as loudness is concerned, humans can typically hear starting at 0 dB.

Answer 2

Answer:

i will give you point vise answers.

Explanation:

1= 60db

2=sound

3=membrane

4=all of these

5= 20- 20000 hz

6=Hertz

7=512 Hertz

8=guitar

9=loudness

10=woman's

I think this is enough for you