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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