MCQ Production and Propagation of Sound Chapter 12 Class 9 Science

MCQ’s For All Chapters – Science Class 9th

1. There will be total 14 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. Sound is produced by _________objects.

fast moving

vibrating

stationary

rotating

Your comments:

Question 1 of 14

2. You can not talk to each other on the moon because

atmosphere is not present, that is, there is vacuum

you would not feel like talking

compressions and rarefactions can only travel on earth's surface

gravity is 1/6^th that on the earth

Your comments:

Question 2 of 14

3. The distance between a compression and the next rarefaction of a longitudinal wave is

A

B

C

D

Your comments:

Question 3 of 14

4. The motion of the particles of a medium when a sound wave is passing through it is:

translatory

random

rotatory

oscillatory

Your comments:

Question 4 of 14

5. Which of the following quantities is transferred during wave propagation?

Energy

Particles

Speed

Mass

Your comments:

Question 5 of 14

6. Sound is produced when

An object falls

An object vibrates

An object is stationary

An object is on ground

Your comments:

Question 6 of 14

7. The sound waves in air are

Longitudinal waves

Partially longitudinal and partially transverse

Transverse waves

Seismic waves

Your comments:

Question 7 of 14

8. In longitudinal waves, how does the particle of medium vibrate compared to the direction of propagation of wave?

Perpendicular

Parallel

At 45°

At 60°

Your comments:

Question 8 of 14

9. Which of the following  will does not allow sound propagation?

Vacuum

Air

Steel

Water

Your comments:

Question 9 of 14

10. Which of the following is a mechanical wave?

Sound

Light

Radio waves

X-rays

Your comments:

Question 10 of 14

11. Assertion : The flash of lightening is seen before the sound of thunder is heard.
Reason : Speed of sound is greater than speed of light.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true and R is not the correct explanation of A

(c) A is true but R is false

(d) A is False but R is true

Question 11 of 14

12. Assertion : Two persons on the surface of moon cannot talk to each other.
Reason : There is no atmosphere on moon.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true and R is not the correct explanation of A

(c) A is true but R is false

(d) A is False but R is true

Question 12 of 14

13. Assertion : Sound would travel faster on a hot summer day than on a cold winter day.
Reason : Velocity of sound is directly proportional to the square of its absolute temperature.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true and R is not the correct explanation of A

(c) A is true but R is false

(d) A is False but R is true

Question 13 of 14

14. Assertion : Echo is produced when sound is incident on hard and polished surface.
Reason : Sound energy can be totally reflected by objects with soft and loose texture.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true and R is not the correct explanation of A

(c) A is true but R is false

(d) A is False but R is true

Question 14 of 14

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