Everyday Science

Sound and its Applications MCQs with Answers

Welcome to the Sound and its Applications MCQs with Answers. In this post, we are sharing Sound and its Applications Multiple Choice Questions and Answers in Everyday Science section for various competitive exams in Pakistan. Each question offers a chance to enhance your knowledge regarding Sound and its Applications online MCQs Test.

What is the speed of sound in air at room temperature (20°C)?
a) 343 m/s
b) 300 m/s
c) 1500 m/s
d) 1000 m/s

Which of the following is not a property of sound waves?
a) Frequency
b) Amplitude
c) Wavelength
d) Voltage

What determines the pitch of a sound?
a) Amplitude
b) Frequency
c) Speed
d) Intensity

What is the unit of sound intensity?
a) Decibel (dB)
b) Hertz (Hz)
c) Newton (N)
d) Watt (W)

In which medium does sound travel the fastest?
a) Air
b) Water
c) Steel
d) Vacuum

Which phenomenon explains the change in pitch of a moving sound source?
a) Doppler effect
b) Refraction
c) Diffraction
d) Interference

What is the term for a sound that reflects off a surface and returns to the listener?
a) Reverberation
b) Echo
c) Absorption
d) Diffraction

Which of the following is an application of ultrasonic waves?
a) Medical imaging
b) Radio broadcasting
c) Television signals
d) Electrical circuits

What is the term for the combination of two or more sound waves overlapping?
a) Reflection
b) Refraction
c) Interference
d) Diffraction

What property of sound waves is responsible for their loudness?
a) Frequency
b) Wavelength
c) Amplitude
d) Speed

Which type of sound wave has a frequency higher than the human hearing range?
a) Infrasound
b) Ultrasound
c) Audible sound
d) Static sound

What is the term for the bending of sound waves around obstacles?
a) Diffraction
b) Reflection
c) Refraction
d) Absorption

What is the principle behind a sonar system?
a) Reflection of light waves
b) Transmission and reception of sound waves
c) Absorption of sound waves
d) Emission of radio waves

What causes the phenomenon of sound refraction?
a) Change in the medium’s density
b) Change in frequency
c) Change in amplitude
d) Change in temperature

Which part of the ear is responsible for converting sound vibrations into neural signals?
a) Ear canal
b) Eardrum
c) Cochlea
d) Auditory nerve

What is the unit of frequency for sound waves?
a) Hertz (Hz)
b) Decibel (dB)
c) Joule (J)
d) Ampere (A)

Which phenomenon occurs when sound waves bounce off a surface and return to the listener?
a) Refraction
b) Diffraction
c) Reflection
d) Absorption

What type of sound is produced by a musical instrument when it vibrates?
a) Harmonic sound
b) White noise
c) Echo
d) Background noise

What is the range of human hearing in terms of frequency?
a) 20 Hz to 20,000 Hz
b) 100 Hz to 10,000 Hz
c) 1 Hz to 100,000 Hz
d) 10 Hz to 1,000 Hz

Which of the following best describes the speed of sound in a vacuum?
a) 343 m/s
b) 1500 m/s
c) 0 m/s
d) 500 m/s

What is a common use of sound waves in medical diagnostics?
a) X-rays
b) MRI
c) Ultrasound
d) CT scans

Which term describes the decrease in sound intensity as it travels through a medium?
a) Diffraction
b) Absorption
c) Reflection
d) Refraction

What effect does a higher amplitude have on the sound wave?
a) It makes the sound quieter
b) It increases the pitch
c) It makes the sound louder
d) It changes the frequency

What is the principle behind a musical instrument producing different notes?
a) Different sound frequencies
b) Different amplitudes
c) Different echo patterns
d) Different absorption rates

What is a common application of sound waves in engineering?
a) Sonar
b) X-ray imaging
c) Radio broadcasting
d) Laser cutting

What term describes the number of vibrations per second in a sound wave?
a) Wavelength
b) Amplitude
c) Frequency
d) Intensity

What does the decibel scale measure?
a) Frequency of sound
b) Speed of sound
c) Loudness of sound
d) Wavelength of sound

What happens to sound waves as they travel through air with increasing temperature?
a) They travel slower
b) They travel faster
c) Their frequency increases
d) Their amplitude decreases

What is the term for the decrease in sound intensity due to distance?
a) Absorption
b) Attenuation
c) Reflection
d) Refraction

Which of the following is an application of sound waves in non-destructive testing?
a) Ultrasound inspection
b) Radioactive scanning
c) X-ray diffraction
d) CT imaging

What effect does temperature have on the speed of sound?
a) It decreases speed
b) It has no effect
c) It increases speed
d) It reverses direction

What type of waves are sound waves?
a) Longitudinal waves
b) Transverse waves
c) Surface waves
d) Electromagnetic waves

How does the human ear perceive different frequencies of sound?
a) As different colors
b) As different pitches
c) As different textures
d) As different smells

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