Sound MCQ

1. Which of the following is a form of mechanical wave?
   a. Light
   b. Sound
   c. Radio waves
   d. X-rays
2. What type of wave is sound?
   a. Transverse
   b. Longitudinal
   c. Electromagnetic
   d. Standing
3. Sound cannot travel through which of the following?
   a. Vacuum
   b. Water
   c. Air
   d. Solids
4. The speed of sound in air at room temperature is approximately:
   a. 300,000 m/s
   b. 343 m/s
   c. 1000 m/s
   d. 1500 m/s
5. Sound waves with higher amplitudes represent:
   a. Higher pitch
   b. Lower pitch
   c. Louder sounds
   d. Softer sounds
6. What is the unit of frequency?
   a. Hertz (Hz)
   b. Decibel (dB)
   c. Meter (m)
   d. Joule (J)
7. Which part of the ear amplifies sound vibrations?
   a. Cochlea
   b. Eardrum
   c. Ear canal
   d. Auditory nerve
8. The reflection of sound is commonly known as:
   a. Refraction
   b. Diffraction
   c. Echo
   d. Absorption
9. What is the minimum number of vibrations per second that the human ear can detect as sound?
   a. 10 Hz
   b. 20 Hz
   c. 1000 Hz
   d. 2000 Hz
10. Which musical instrument produces sound by the vibration of strings?
    a. Trumpet
    b. Drum
    c. Guitar
    d. Flute
11. In which medium does sound travel the fastest?
    a. Air
    b. Water
    c. Steel
    d. Vacuum
12. What is the primary purpose of a sonar device?
    a. To detect earthquakes
    b. To measure atmospheric pressure
    c. To navigate underwater
    d. To measure temperature
13. What is the term for the persistence of sound after the source has stopped producing it?
    a. Echo
    b. Refraction
    c. Absorption
    d. Reflection
14. The Doppler effect is related to which aspect of sound?
    a. Pitch
    b. Loudness
    c. Frequency
    d. Wavelength
15. Which property of a sound wave determines its volume or loudness?
    a. Frequency
    b. Amplitude
    c. Wavelength
    d. Velocity
16. When sound waves change direction as they pass through an opening, it is called:
    a. Reflection
    b. Refraction
    c. Diffraction
    d. Absorption
17. The speed of sound is affected by which of the following factors?
    a. Temperature
    b. Humidity
    c. Altitude
    d. All of the above
18. Which gas is commonly used to fill balloons to make them soundproof?
    a. Oxygen
    b. Helium
    c. Carbon dioxide
    d. Nitrogen
19. What is the range of frequencies that the average human ear can hear?
    a. 20 Hz to 20,000 Hz
    b. 10 Hz to 100 Hz
    c. 1 Hz to 1,000 Hz
    d. 50 Hz to 5,000 Hz
20. What causes the sensation of different musical notes?
    a. Amplitude of sound waves
    b. Frequency of sound waves
    c. Wavelength of sound waves
    d. Velocity of sound waves

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