Question Paper
Class / Subject: Class 10 (ICSE) · Physics
Chapter: Chapter 7 — Chapter 7: Sound
Time Allowed: 32 minutes
Max Marks: 16
1. What is an echo? [1]
(A) Reflection of sound
(B) Absorption of sound
(C) Refraction of sound
(D) Creation of sound
2. What minimum distance is needed to hear a distinct echo? [1]
(A) About 17m
(B) About 1m
(C) About 100m
(D) About 5m
3. What is reverberation? [1]
(A) Persistence of sound due to repeated reflections
(B) Immediate disappearance of sound
(C) Absorption of sound
(D) Refraction of sound
4. What is resonance? [1]
(A) Vibration at natural frequency due to matching frequency source
(B) Random vibration
(C) No vibration at all
(D) Vibration at any frequency
5. What does resonance do to sound? [1]
(A) Amplifies it
(B) Cancels it completely
(C) Absorbs it
(D) Reflects it only
6. Where is echo/reverberation control important? [1]
(A) Auditorium design
(B) Only in outer space
(C) Nowhere practical
(D) Only underwater
7. What technology uses sound reflection? [1]
(A) Sonar
(B) Only telescopes
(C) Only microscopes
(D) Only cameras
8. Why learn about sound properties? [1]
(A) For acoustics and sound-related technology design
(B) No reason
(C) It's not useful
(D) Only for tests
9. What is an echo? [1]
(A) Reflection of sound
(B) Absorption of sound
(C) Refraction of sound
(D) Creation of sound
10. What minimum distance is needed to hear a distinct echo? [1]
(A) About 17m
(B) About 1m
(C) About 100m
(D) About 5m
11. What is reverberation? [1]
(A) Persistence of sound due to repeated reflections
(B) Immediate disappearance of sound
(C) Absorption of sound
(D) Refraction of sound
12. What is resonance? [1]
(A) Vibration at natural frequency due to matching frequency source
(B) Random vibration
(C) No vibration at all
(D) Vibration at any frequency
13. What does resonance do to sound? [1]
(A) Amplifies it
(B) Cancels it completely
(C) Absorbs it
(D) Reflects it only
14. Where is echo/reverberation control important? [1]
(A) Auditorium design
(B) Only in outer space
(C) Nowhere practical
(D) Only underwater
15. What technology uses sound reflection? [1]
(A) Sonar
(B) Only telescopes
(C) Only microscopes
(D) Only cameras
16. Why learn about sound properties? [1]
(A) For acoustics and sound-related technology design
(B) No reason
(C) It's not useful
(D) Only for tests