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Sound and its Applications MCQs with Answers

Sound and its Applications MCQs

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

Answer
a) 343 m/s

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

Answer
d) Voltage

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

Answer
b) Frequency

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

Answer
a) Decibel (dB)

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

Answer
c) Steel

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

Answer
a) Doppler effect

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

Answer
b) Echo

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

Answer
a) Medical imaging

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

Answer
c) Interference

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

Answer
c) Amplitude

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

Answer
b) Ultrasound

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

Answer
a) Diffraction

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

Answer
b) Transmission and reception of sound 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

Answer
a) Change in the medium’s density

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

Answer
c) Cochlea

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

Answer
a) Hertz (Hz)

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

Answer
c) Reflection

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

Answer
a) Harmonic sound

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

Answer
a) 20 Hz to 20,000 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

Answer
c) 0 m/s

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

Answer
c) Ultrasound

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

Answer
b) Absorption

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

Answer
c) It makes the sound louder

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

Answer
a) Different sound frequencies

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

Answer
a) Sonar

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

Answer
c) Frequency

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

Answer
c) Loudness 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

Answer
b) They travel faster

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

Answer
b) Attenuation

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

Answer
a) Ultrasound inspection

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

Answer
c) It increases speed

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

Answer
a) Longitudinal 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

Answer
b) As different pitches

If you are interested to enhance your knowledge regarding PhysicsChemistryComputer, and Biology please click on the link of each category, you will be redirected to dedicated website for each category.

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