Sound and Its Properties MCQs

1. Sound is a type of:
(A) Electromagnetic wave
(B) Mechanical wave
(C) Light wave
(D) Radio wave

2. The speed of sound in air depends on:
(A) The frequency of the sound
(B) The amplitude of the sound
(C) The temperature of the air
(D) The color of the sound

3. The unit of frequency of sound is:
(A) Decibel
(B) Hertz
(C) Joule
(D) Newton

4. What is the primary factor that determines the pitch of a sound?
(A) Amplitude
(B) Frequency
(C) Speed
(D) Wavelength

5. The loudness of a sound is primarily determined by:
(A) Its frequency
(B) Its amplitude
(C) Its speed
(D) Its color

6. Which of the following is NOT a characteristic of sound waves?
(A) They require a medium to travel through
(B) They travel faster in denser media
(C) They are longitudinal waves
(D) They can travel through a vacuum

7. The phenomenon of sound waves bouncing back after striking a surface is called:
(A) Diffraction
(B) Reflection
(C) Refraction
(D) Interference

8. The speed of sound is fastest in:
(A) Air
(B) Water
(C) Steel
(D) Vacuum

9. Which of the following does NOT affect the speed of sound?
(A) Temperature
(B) Medium of propagation
(C) Frequency of the sound
(D) Pressure

10. If the frequency of a sound wave is doubled, its wavelength will:
(A) Be halved
(B) Double
(C) Remain the same
(D) Be quadrupled