Question

Q. 1) MULTIPLE CHOICE QUESTIONS:

1. When you hit a drum you make the skin:
(a) sink
(b) Inflate
(c) vibrate
(d) rest

2. Vibrations of high frequency have a larger________than vibrations of lower frequency,
(a) pitch
(b) amplitude
(c) both (a) and (b)
(d) none of these

3. Repetition of sound due to its reflection called:_________
(a) reflectors
(b) Sonar
(c) echo
(d) image

4. Smaller the length of string in guitar_______is the note.
(a) lower
(b) higher
(C) no change
(d) can't say

5. Jal tarang is an example of________instruments.
(a) percussion
(b) wind
(c) stringed
(d) grind

6. Sound waves are usually absorbed by________surfaces.
(a) smooth
(b) rough
(c) any
(d) can't say

7. The range of frequency from 20 Hz to 20,000 Hz is called ________frequency
ranger.
(a) ultrasonic
(b) audible
(c) infrasonic
(d) edible

Q. 2) VERY SHORT ANSWERS:

1. ________ travel through air.

2. Larger vibrations have ________amplitude.

3. ________ is the part of ear visible outside.

4. You hear a bomb blast 10 seconds after it happens. Do you agree?

5. Similar to light waves, sound waves also undergo reflection. True or false?

6. Where are the vocal cords located in a human body?

7. We can get echo in a room of 10 m length and width. Do you agree?

8. Frequencies below 20 Hz.__________

9. The frequent to and fro movement of an object about its mean position.

10. Musical sounds of a specific pitch. _________

Who Answers This All Questions Correctly I Will Mark Him/Her Brainliest.
Please Answer​.​

Answer 1

Answer:

Q.1) 1. (c). vibrate

2.( )

Answer 2

Answer:

ans is

Explanation:

I don't know