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sound wave mcq. We covered all the sound wave mcq in this post for free so that you can practice well for the exam.
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mcq on sound Waves for Students
What is the low-pressure area formed when a vibrating body moves backward called?
(a) Rarefaction
(b) Compression
(c) Depression
(d) Hypertension
Option a – Rarefaction
When a sound wave moves from east to west, how do air particles move?
(a) East-west
(b) North-south
(c) Vertically
(d) None of these
Option a – East-west
The unit that determines how loud a sound is relates to
(a) Meter
(b) Hertz
(c) Meter per second
(d) Second
Option b – Hertz
At an outdoor concert, why can you still hear music when someone blocks your line of sight to the orchestra?
(a) sound easily travels through a person’s head
(b) The head size is small compared to the wavelength of sound
(c) sound reflects off the head
(d) The sound wavelength is much smaller than the head
Option b – The head size is small compared to the wavelength of sound
After an underwater blast occurs near the shore, who hears it first—person X underwater or person Y on land, both 1 km away?
(a) X hears it first
(b) Y hears it first
(c) Both hear it simultaneously
(d) Y doesn’t hear it at all
Option a – X hears it first
What kind of waves can be generated in a long spring?
(a) Longitudinal only
(b) Transverse only
(c) Both longitudinal and transverse
(d) Only electromagnetic
Option c – Both longitudinal and transverse
When a vibrating object moves forward, what high-pressure area does it create?
(a) Rarefaction
(b) Compression
(c) Depression
(d) Hypertension
Option b – Compression
Which statement is incorrect about sound?
(a) It moves in straight lines
(b) It is a type of energy
(c) It propagates through waves
(d) It travels faster in a vacuum than in air
Option d – It travels faster in a vacuum than in air
How do we recognize a friend’s voice?
(a) By pitch
(b) By quality
(c) By intensity
(d) By speed
Option b – By quality
What kind of pressure is present in a compression region?
(a) Low pressure
(b) Normal pressure
(c) High pressure
(d) Zero pressure
Option c – High pressure
When comparing echo during summer and winter, it is heard
(a) Sooner in summer
(b) Later in summer
(c) At the same time
(d) None of these
Option a – Sooner in summer
Echo is an example of
(a) Reflected sound
(b) Refracted sound
(c) Polarized sound
(d) None of these
Option a – Reflected sound
Sound waves are
(a) Mechanical waves
(b) Electromagnetic waves
(c) Longitudinal waves
(d) Both mechanical and longitudinal
Option d – Both mechanical and longitudinal
The sitar belongs to which category of musical instruments?
(a) Wind
(b) String
(c) Percussion
(d) Reed
Option b – String
The pressure in regions of compression or rarefaction depends on
(a) The number of particles per volume
(b) Particle density
(c) The particle’s position
(d) Both the number and density of particles
Option d – Both the number and density of particles
Ultrasonic waves are those with frequencies
(a) Below 20 Hz
(b) Between 20 and 20,000 Hz
(c) Above 20,000 Hz
(d) Higher than 20,000 MHz
Option c – Above 20,000 Hz
What does one hertz represent?
(a) One cycle per second
(b) One second
(c) One meter per second
(d) One second per meter
Option a – One cycle per second
When a particle in contact with a vibrating source moves and pushes the next particle, what does it do after?
(a) Returns to its original place
(b) Keeps pushing the next one
(c) Travels through the entire medium
(d) None of these
Option a – Returns to its original place
What is transferred by a wave as it travels?
(a) Mass
(b) Speed
(c) Wavelength
(d) energy
Option d – energy
In which medium does sound travel the fastest?
(a) Water
(b) Air
(c) Metal
(d) Vacuum
Option c – Metal
The ratio between an object’s speed and the speed of sound is called
(a) Sonic index
(b) Doppler ratio
(c) Mach number
(d) Refractive index
Option c – Mach number
Through which of the following can sound be transmitted?
(a) Solids
(b) Liquids
(c) Gases
(d) Any of the three above
Option d – Any of the three above
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