MCQ- 1 ICSE Physics class 10 ch-3 Sound

Sound - Reflection of Sound Waves (Class 10)

1. What is the angle of incidence in sound reflection if the angle of reflection is 45°?

45°
30°
60°
90°

Correct Answer: 45°

2. Which law states that the angle of incidence is equal to the angle of reflection?

Law of Reflection
Law of Refraction
Law of Echo
Law of Sound

Correct Answer: Law of Reflection

3. Which of the following is an application of sound reflection?

Echo
Diffraction
Polarization
Refraction

Correct Answer: Echo

4. The minimum distance required to hear an echo clearly is approximately:

17 meters
10 meters
5 meters
25 meters

Correct Answer: 17 meters

5. Which surface reflects sound most effectively?

Hard and Smooth
Soft and Rough
Porous
Absorbent

Correct Answer: Hard and Smooth