MCQ- 2 ICSE Physics class 10 ch-3 Sound

Echoes and Their Uses (Class 10 Sound)

1. What is the minimum distance required for an echo to be heard?

17 meters
5 meters
10 meters
25 meters

Correct Answer: 17 meters

2. Which of the following is a practical use of echo?

Sonar (Sound Navigation and Ranging)
Refraction of sound
Sound absorption
Sound polarization

Correct Answer: Sonar (Sound Navigation and Ranging)

3. Echo is caused due to:

Reflection of sound
Refraction of sound
Absorption of sound
Diffraction of sound

Correct Answer: Reflection of sound

4. Which of the following animals use echoes for navigation?

Bats
Lions
Elephants
Dogs

Correct Answer: Bats

5. Echo sounding is commonly used to:

Measure depth of sea
Measure air pressure
Detect temperature
Capture radio waves

Correct Answer: Measure depth of sea