Sound Quiz - ICSE Class 10 Physics

Free practice quiz: Sound (ICSE Class 10 Physics). 54 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This ICSE Class 10 Physics practice quiz has 54 multiple-choice questions on Sound, and 54 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. A sound wave in air has a frequency of 200 Hz and a wavelength of 1.5 m. What is the speed of sound in air?

   1. 200 m/s
   2. 300 m/s
   3. 400 m/s
   4. 150 m/s
   Show answer

   Answer: B. 300 m/s

   The speed of a wave (v) is related to its frequency (f) and wavelength (λ) by the equation v = fλ. Given f = 200 Hz and λ = 1.5 m, the speed v = 200 Hz * 1.5 m = 300 m/s.

2. A sound wave has an amplitude of 5 units. If the amplitude is doubled, the intensity of the sound will:

   1. Remain the same
   2. Double
   3. Become four times
   4. Become half
   Show answer

   Answer: C. Become four times

   The intensity of a wave is proportional to the square of its amplitude (I ∝ A²). If the amplitude is doubled (A becomes 2A), the intensity becomes (2A)² = 4A², meaning it becomes four times the original intensity.

3. Two sound waves have frequencies of 250 Hz and 500 Hz. Which sound is likely to be perceived as louder?

   1. The 250 Hz sound
   2. The 500 Hz sound
   3. Both will be equally loud if their amplitudes are the same
   4. Loudness is not related to frequency
   Show answer

   Answer: C. Both will be equally loud if their amplitudes are the same

   Loudness is primarily determined by the amplitude (or intensity) of the sound wave, not its frequency. While human hearing sensitivity varies with frequency, for the same amplitude, both sounds would have the same perceived loudness.

4. What is the primary characteristic of sound that determines its loudness?

   1. Frequency
   2. Wavelength
   3. Amplitude
   4. Speed
   Show answer

   Answer: C. Amplitude

   Loudness is a subjective perception of sound intensity, which is directly related to the amplitude of the sound wave. A larger amplitude corresponds to a louder sound.

5. The loudness of a sound is related to its:

   1. Amplitude
   2. Frequency
   3. Speed
   4. Wavelength
   Show answer

   Answer: A. Amplitude

   Loudness is a subjective perception of sound intensity, which is directly proportional to the square of the amplitude of the sound wave. A larger amplitude means a louder sound.

More questions in this quiz

Answers and explanations are in the full quiz.

1. When the distance of the source of sound from the listener doubles, how does the intensity of sound change?
2. The time period of a simple pendulum is 2 seconds. What is its frequency?
3. A tuning fork of frequency 440 Hz produces sound waves in air. If the speed of sound in air is 330 m/s, what is the wavelength of the sound wave?
4. Which characteristic of sound is responsible for distinguishing between a shrill and a deep sound?
5. Sound waves travel fastest in:
6. The phenomenon of echo is due to:
7. The unit of loudness of sound is:
8. When sound waves pass from air into water, which of the following quantities remains unchanged?
9. Which of the following is an example of infrasonic sound?
10. Which phenomenon is responsible for the shimmering effect of sound heard in large empty halls?
11. If the frequency of a sound wave is halved, while its speed remains constant, what happens to its wavelength?
12. The process of using sound waves to map the ocean floor is called:
13. Which term describes the quality of a sound that distinguishes different musical instruments playing the same note at the same loudness?
14. A person hears an echo 4 seconds after shouting towards a cliff. If the speed of sound is 340 m/s, how far away is the cliff?
15. What is the minimum distance required between the source and the reflecting surface to hear a distinct echo, assuming the speed of sound is 340 m/s and the persistence of hearing is 0.1 s?
16. Which of the following describes the characteristic of sound related to its waveform, affecting its perceived quality?
17. A sound wave has a frequency of 500 Hz. If it travels at 350 m/s in air, what is its wavelength?
18. The phenomenon where sound waves bend around obstacles or spread out after passing through a narrow opening is called:
19. What happens to the pitch of a sound when the frequency of the sound wave increases?
20. When a sound wave travels from a rarer medium to a denser medium, its wavelength:
21. The Doppler effect for sound is observed when:
22. Ultrasound waves have frequencies:
23. Which instrument is used to measure the intensity level of sound?
24. When two sound waves of slightly different frequencies interfere, what is heard?
25. The speed of sound in a medium depends on:
26. A sound wave has a frequency of 20 Hz. This sound is:
27. Which of the following statements about sound waves is incorrect?
28. The phenomenon of resonance occurs when:
29. If a sound source is moving away from a stationary observer at the speed of sound, the observer will hear:
30. The bending of light into the shadow region of an opaque object is called diffraction. A similar phenomenon occurs with sound. If sound waves encounter a barrier, they tend to:
31. If the temperature of the air increases, the speed of sound in air:
32. A sonar system uses sound waves to determine the depth of the sea. If the time taken for the sound pulse to travel to the seabed and back is 0.8 seconds, and the speed of sound in water is 1500 m/s, what is the depth of the sea?
33. What is the relationship between the intensity of sound and its amplitude?
34. Which phenomenon allows a musician to hear their own instrument in a concert hall, even when playing softly, due to multiple reflections of sound?
35. A tuning fork vibrates at 440 Hz. What is the wavelength of the sound produced in air if the speed of sound is 330 m/s?
36. The ability to distinguish between the sound of a violin and a piano playing the same note at the same loudness is due to a difference in their:
37. If a sound source is moving towards a stationary observer, the perceived frequency will:
38. A sound wave travels from air into a solid. What is the most likely change in its wavelength, assuming the frequency remains constant?
39. Which of the following sound frequencies is in the ultrasonic range for humans?
40. When sound waves encounter a large, flat surface, they bounce back. This phenomenon is known as:
41. If the frequency of a sound wave doubles, and its speed remains constant, what happens to its wavelength?
42. The Doppler effect in sound is the change in frequency due to:
43. A sound wave has a frequency of 10 kHz. This sound is:
44. Which property of a sound wave determines its pitch?
45. Sound waves cannot travel through:
46. What is the minimum distance from a reflecting surface to hear a distinct echo if the speed of sound is 340 m/s and the persistence of hearing is 0.1 s?
47. The SI unit for frequency is:
48. When a sound wave passes from one medium to another, its frequency remains constant. This implies that the product of its speed and wavelength:
49. Which of the following best describes the sound produced by a large drum?

More quizzes

• Spectrum▶ Play
• Work, Energy and Power▶ Play
• Current Electricity▶ Play
• Electromagnetism▶ Play
• Force▶ Play
• Household Circuits▶ Play

Browse all Physics quizzes

More to play