SOUND MCQS
Sound is produced due to
friction
circulation
vibration
refraction
Sound passes from one place to another in form of
rays
waves
energy
light
In which of following, speed of sound is least?
Air
Liquid
Solid
Vacuum
Sound waves have
Amplitude only
Frequency and wavelength only
Amplitude, frequency and wavelength
Amplitude and wavelength only
Sound waves include
troughs and crests
compressions and crests
troughs and rarefactions
compressions and rarefactions
Sound waves can pass through
vacuum
air only
air and other states of matter
vacuum and other states of matter
In which of following, speed of sound is greatest?
Air
Liquid
Solid
Vacuum
Distance between two consecutive compressions and rarefactions is termed as
frequency
amplitude
wavelength
wave point
Sound can be transmitted through a medium which
contains charge
has higher density than air
contains molecules that vibrate
contains molecules that collide
Sound is a
form of power
form of energy
form of transverse waves
form of latitudinal waves
Sound waves travel at
same speed in different mediums
different speed in same mediums
different speed in different mediums
highest speed in vacuum
If temperature increases, speed of sound
also increases
decreases
remains same
may increase or decrease
Compared to air, sounds travel faster in
liquids
gases
vacuum
fluids
Sounds of traffic, aircrafts and machines are called
artificial sounds
natural sounds
man-made sounds
noise
Astronauts use radios to communicate, this is because
sound travels at very high speed in vacuum
sound does not travel in vacuum
sound energy in the vacuum may burst the eardrums
sound energy turns into light in vacuum
Sound waves are detected by
speakers
electronics
microphones
computers
Sounds are measured in units called
Hertz (Hz)
Decibels (dB)
Meters (m)
Pascal (Pa)
Unlike light, sounds cannot
pass through transparent solids
pass through air
pass through liquids
pass through vacuum
Sound loses more energy in
air
vacuum
liquid
solid
Loud noise can
damage our ears
make us ill
disturb our sleep
interrupt conversation
Sound is made louder by increasing
wavelength
frequency
wave front
amplitude
Human organs that detect sound are
eyes
ears
nose
tongue
Echoes are formed when sound
strikes a wall and reflects back
strikes a wall and is absorbed
hits the eardrum and keeps on hitting
is too loud
In a flute, length of air cutting through holes is changed by
changing length
changing valves
fingers
sealers
Sound can travel in air because
air has pressure
air has humidity
air has particles
air has temperature
Microphone changes sound waves into
mechanical signals
electrical signals
light signals
wave signals
These repeated sounds in an empty hall are known as
echoes
grief echoes
hollow echoes
soft echoes
Signals are showed up in a monitor called
Cathode Tube
Anode Tube
Oscilloscope
Cathode Scope
Sound is carried to our ears by
pressure
vibrations
temperature effect
humidity effect
Light travels
slower than sound
faster than sound
at the same speed as sound
at different speeds as compared to sound
Sound travels more in
air
liquids
soft solids
hard solids
Sound cannot travel in vacuum because
there is no pressure in vacuum
there is no air in vacuum
there is no humidity in vacuum
there are no particles in vacuum
Lowest level of frequency a human ear can detect is
2 Hz
20 Hz
20kHz
2kHz
Frequency is measured in units called
Meters
Hertz
Watts
Ohms
Animal that uses echoes is known as
Bat
Snake
Rat
Rabbit
Sound travels fastest in solids because the
particles vibrate more vigorously
particles move faster
collision of particles is greater
particles are closely packed
Height of a wave is known as
Amplitude
Wave front
Volume
Space of sound
Speed of sound in water is
100 m/s
200 m/s
1500 m/s
2000 m/s
Number of sound waves sent per second is known as
wave front
wavelength
frequency
amplitude
A reflected sound is known as
Reflection of sound
Rarefaction
Refraction of sound
Echo
Highest level of frequency a human ear can detect is
2 Hz
20 Hz
20kHz
2kHz
Sound travels fastest in
Gases
Liquids
Solids
Plasma
Sounds with a higher frequency then a human ear can detect are known as
Infrasound
Ultrasounds
High sounds
Low sounds
A wave with ups and downs is known as
Transverse waves
Longitudinal waves
Latitudinal waves
Horizontal waves
Bats also use ultrasound to prevent
predators
homes
preys
obstacles
Unwanted or unpleasant sounds are known as
Music
Noise
Filters
Rush
Speed of sound in air is
3000 m/s
300 m/s
3300 m/s
330 m/s
Medical use of ultrasound is to detect the
baby
cancer cells
infected parts of the body
damaged organs
An animal that can hear sounds with higher frequency than human ear is
whale
pigeon
snake
dog
Wave with compressions and rarefactions is known as
Transverse waves
Longitudinal waves
Latitudinal waves
Horizontal waves
Ships use echolocation to measure the
size of fish
density of water
depth of water
area of ocean
SPACE FOR ROUGH WORK
