) Echocardiography studies using ultrasound scans.
A ) Nerves
B ) Abdomen C ) Heartbeats D ) Brain
Ans C ) Heartbeats
) The time taken by a particle to complete one oscillation is called the of the wave.
A ) Amplitude
B ) Period
C ) Frequency
D ) Wavelength
Ans B ) Period
) Sonography method is and hence is increasingly used in medical practice for correct diagnosis.
A ) Painful
B ) Painless
C ) Challenging
D ) Costly
Ans B ) Painless
) The technique of Sonography makes use of a …………… and ……………
A ) Gel and probe
B ) Gel and camera
C ) Camera and sound
D ) None of these
Ans A ) Gel and probe
) Clothes, Papers, Curtains, etc. absorb sound instead of reflecting it.
A ) True
B ) False
Ans A ) True
) For a fix temperature, the velocity of sound does not depend on the ……………
A ) Molecular weight
B ) Density
C ) Temperature
D ) Pressure
Ans D ) Pressure
.
) The part of the ear that converts vibration coming from membrane into electrical signals.
A ) Outer ear B ) Cochlea C ) Eardrum
Ans B ) Cochlea
) If the frequency of radio waves is 530 MHz, then the wavelength of radio waves is (c = 3 x 108
m/s)
A ) 0.56 m B ) 5.6 m C ) 56.6 m D ) 0.75 m
Ans A ) 0.56 m
) A boat at anchor is rocked by waves whose crests are 100 feet. apart and whose velocity is 25 ft/sec. The time taken by each wave to reach the boat is …………………
A ) 4 s
B ) 0.25 s C ) 2500 s D ) 0.125 s
Ans A ) 4 s
) If the distance between two successive compressions in propagation of a longitudinal wave in a medium is
0.5 m & the frequency is 300 hz, the wave speed is ……………….
A ) 750 m/s B ) 300 m/s C ) 450 m/s D ) 150 m/s
Ans D ) 150 m/s
) The velocity of sound is to the square root of density of the medium.
A ) Directly proportional B ) Inversely proportional C ) Equal
D ) Almost equal
Ans B ) Inversely proportional
) To hear an echo, the total distance covered by sound from the point of generation to the reflecting surface and back should be atleast ………………
A ) 36 m B ) 17.2 m C ) 34.4 m D ) 19 m.
Ans C ) 34.4 m
) Milk is sterilized by killingTh…er…e …wa…s .afnorerarolor nstgarstihneglfthliefeapupsliincagtiuolntr.aPsleoausned.try
A ) Fungus B ) Bacteria C ) Virus
D ) None of these
Ans B ) Bacteria
..
) The velocity of sound is to the square root of the temperature of the medium.
A ) Directly proportional B ) Inversely proportional C ) Equal
D ) Almost equal
Ans A ) Directly proportional
) Sound produced by the pendulum is ……………
A ) Audible sound
B ) Infra sound
C ) Ultrasound
D ) None of these
Ans B ) Infra sound
) Velocity of sound is highest in ……………
A ) Solids B ) Liquids C ) Gases
Ans A ) Solids
) If the molecular weight of the gas is increased four times, then the velocity of the sound to half of
its value.
A ) Increases B ) Doubles C ) Reduces
D ) None of these
Ans C ) Reduces
) Sound is a form of ……………..
A ) Energy
B ) Reflection
C ) Vibration
D ) Reverberation
Ans A ) Energy
) Sound is a form of energy which creates the sensation of hearing in our ears.
A ) True
B ) False
.
Ans A ) True
..
) Sound waves with frequency greater than 20KHz are called ……………
A ) Audible sound
B ) Infra sound
C ) Ultrasound
D ) None of these
Ans C ) Ultrasound
) Find the odd one out
A ) Temperature
B ) Density
C ) Molecular weight
D ) Pressure
Ans D ) Pressure
) Find the odd one out.
A ) Bats B ) Rats C ) Cats
D ) Dolphins
Ans C ) Cats
) is a region where the particles of the medium are well separated from each other during the
propagation of longitudinal wave.
A ) Crests
B ) Compressions
C ) Trough
D ) Rarefaction
Ans D ) Rarefaction
) To locate the cracks and faults in metal blocks ultrasound is used.
A ) True
B ) False
Ans A ) True
) Which of the following is different from others?
A ) Wavelength
B ) Velocity
C ) Frequency
D ) Amplitude
Ans D ) Amplitude
) are used to establish ship to ship communication.
A ) Ultrasounds
.
B ) Sonicsounds
C ) Supersonic sounds
D ) Infrasounds
Ans A ) Ultrasounds
..
) The amplitude of sound determines its ……………
A ) Quality
B ) Pitch
C ) Loudness
D ) Wavelength
Ans C ) Loudness
) The nerve that connects inner ear to brain.
A ) Sensory nerve B ) Auditory nerve C ) Olfactory nerve
Ans B ) Auditory nerve
) If the time period of an oscillation is tripled, then the frequency becomes its original.
A ) 3 times
B ) 1 / 3
C ) 1 / 9
D ) 9 times
Ans B ) 1 / 3
) At rarefactions in medium, density as well as pressure is ………………
A ) High
B ) Low
C ) Infinite
D ) Zero
Ans B ) Low
) wave is a wave in which the particles of the medium vibrate in a direction parallel to the direction
of propagation of the wave.
A ) Electromagnetic
B ) Transverse
C ) Polarised
D ) Longitudinal
Ans D ) Longitudinal
) sound has frequency below 20 hz and is not audible to human beings.
A ) Ultrasonic
B ) Sonic
C ) Infrasonic
.
D ) Supersonic
Ans C ) Infrasonic
..
) The maximum displacement of a particle from its mean position is called its …………………
A ) Amplitude
B ) Period
C ) Frequency
D ) Wavelength
Ans A ) Amplitude
) To discover a sunken ship or objects deep inside the sea, technology is used.
A ) Refraction
B ) Reverberation
C ) SONAR
D ) Wave
Ans C ) SONAR
) Images of the internal organs in a human body can be obtained using ……………
A ) Ultrasound
B ) Infrasound
C ) Audible sound
D ) NMR
Ans A ) Ultrasound
) SONAR has a …………… and , which are fitted on ships or boats.
A ) Absorber, reflector
B ) Absorber, transmitter C ) Transmitter, receiver D ) Reflector, receiver
Ans C ) Transmitter, receiver
) The velocity of sound is inversely proportional to the ……………
A ) Pressure
B ) Square root of density
C ) Square root of temperature
D ) Humidity
Ans B ) Square root of density
) sound has frequency between 20 hz – 20000 hz and is audible to human beings.
A ) Ultrasonic
B ) Sonic
C ) Infrasonic
D ) Supersonic
.
Ans B ) Sonic
..
) The velocity of sound in air at 22°C is …………………….
A ) 384 m/s B ) 244 m/s C ) 344 m/s D ) 284 m/s
Ans C ) 344 m/s
) A person observes a smoke from the cannon. After 1.5 seconds, he hears the bang. If the cannon is 510 m away from the observer, the velocity of sound in air is .……………
A ) 240 m B ) 340 m C ) 140 m D ) 340 m
Ans B ) 340 m
) Bats can produce sounds.
A ) Infrasonic
B ) Loud
C ) Ultrasonic
D ) Low quality
Ans C ) Ultrasonic
) In some auditoriums, due to inferior sound reception we hear ……………
A ) Echo
B ) Reverberation
C ) Noise
D ) None of these
Ans B ) Reverberation
) The time taken for one oscillation is called the Time period.
A ) False
B ) True
Ans B ) True
) Speed of sound increases with an increase in ……………
A ) Molecular weight
B ) Density
C ) Temperature
D ) Pressure
Ans C ) Temperature
) In a single sound can be heard continuously.
A ) Echo
.
B ) Reverberation
C ) Medium
D ) None of these
Ans B ) Reverberation
..
) Velocity of sound depends on temperature of air
A ) False
B ) True
Ans B ) True
) Under similar conditions of temperature and pressure in which of the following gases will the velocity of sound be least?
A ) O2
B ) H2 C ) CO2 D ) N2
Ans C ) CO2
) The velocity of sound increases as the temperature is increased. This increase is:
A ) 0.61 ms-1/°C B ) 61 ms-1/°C C ) 30.5 ms-1/°C
D ) 0.305 ms-1/°C
Ans A ) 0.61 ms-1/°C
) Communication between ships at sea is carried out using ……………
A ) Radar
B ) Ultrasound
C ) Infrasound
D ) Nautical miles
Ans C ) Infrasound
) The incident sound waves and the reflected sound waves are on the of the normal.
A ) Same side
B ) Opposite sides C ) Left hand side D ) Right hand side
Ans B ) Opposite sides
) Repetition of the original sound because of reflection of sound is called ………………..
A ) Reflection B ) Refraction C ) Echo
D ) Reverberation
.
Ans C ) Echo
..
) Children under the age of can hear upto 25000 Hz.
A ) 12
B ) 15
C ) 7
D ) 5
Ans D ) 5
) The technique was first developed during world war I to detect enemy submarines.
A ) Refraction
B ) Reverberation
C ) Wave
D ) SONAR
Ans D ) SONAR
) Intricate parts of the machines are cleaned using infrasound.
A ) True
B ) False
Ans B ) False
) The velocity of sound is maximum in ……………
A ) Solids B ) Liquids C ) Gases D ) Vacuum
Ans A ) Solids
) SONAR is used for ……………
A ) Searching icebergs
B ) Distance and speed of underwater object
C ) Depth of sea
D ) All of these
Ans D ) All of these
) in the objects are responsible for producing sound.
A ) Reflections
B ) Waves
C ) Reverberations
D ) Vibrations
Ans D ) Vibrations
) Sonography is useful in finding out ……………
A ) Condition of the heart
.
B ) State of the heart after a heart attack
C ) Growth of the fetus
D ) All of these
Ans D ) All of these
..
) The golghumat in Karnataka is perfect example for multiple reflection of sound.
A ) True
B ) False
Ans A ) True
) There should be materials to reduce reverberation in a room.
A ) Sound absorbing
B ) Precious C ) Reflecting D ) Glass
Ans A ) Sound absorbing
) The of the sound waves is indicated by the Greek letter lamba (λ).
A ) Frequency B ) Wavelength C ) Velocity
D ) Time period
Ans B ) Wavelength
) Sound waves get from a solid or a liquid surface.
A ) Absorbed B ) Refracted C ) Reflected D ) All of these
Ans C ) Reflected
) If the wavelength is 0.5 m & wave speed of the wave is 50 m/s, then the time period is …………………….
A ) 1 s
B ) 0.05 s C ) 0.01 s D ) 0.1 s
Ans C ) 0.01 s
) The incident sound and reflected sound wave make equal angles with the normal.
A ) True
B ) False
Ans A ) True
) The periodic time is second if the frequency of the wave is 100 Hz and the wavelength is 0.2 m.
A ) 20 s
.
B ) 2 s
C ) 1 s
D ) 0.01 s
Ans D ) 0.01 s
..
) Children under the age of 5 years can hear waves with frequency up to ……………
A ) 20Hz
B ) 25KHz
C ) Above 25kHz
D ) None of these
Ans B ) 25KHz
) is a region where the particles of the medium are crowded together during the propagation of
longitudinal wave.
A ) Crests
B ) Rarefaction
C ) Compressions
D ) Trough
Ans C ) Compressions
) Sonography technique can be used for sex determination during pregnancy.
A ) False
B ) True
Ans B ) True
) Longitudinal waves are created by dropping a stone in still water.
A ) False
B ) True
Ans A ) False
) A hard and flat surface is a good ……………
A ) Absorber B ) Reflector C ) Refractor
D ) None of these
Ans B ) Reflector
) The propagation of a sound wave is in form of alternate bands of compression and rarefaction.
A ) False
B ) True
Ans B ) True
) The sensation of sound persists in our brain for about …………………
A ) 1 second
B ) 10 second
.
C ) 0.01 second
D ) 0.1 second
Ans D ) 0.1 second
..
) is the phenomenon in which sound waves are reflected multiple times causing a single sound to
be heard more than once.
A ) Reflection
B ) Refraction
C ) Reverberation
D ) Persistence of sound.
Ans C ) Reverberation
) The normal hearing range for humans is ……………
A ) 20 to 20,000 Hz
B ) Greater than 20,000Hz
C ) 0 to 20Hz
D ) None of these
Ans A ) 20 to 20,000 Hz
) When a reaches the ear drum, the pressure outside the membrane increases and forces the
ear drum inwards.
A ) Rarefaction
B ) Crests
C ) Trough
D ) Compression
Ans D ) Compression
) A longitudinal wave is produced in a slinky toy. The wave travels at a speed of 40 cm/s and the frequency of the wave is 25 Hz. The minimum separation between the consecutive compressions of the slinky is
…………………
A ) 2
B ) 0.625 cm
C ) 1.6 cm
D ) 1.2 cm
Ans C ) 1.6 cm
) technology uses ultrasound waves to generate images of internal organs of the human body.
A ) X rays
B ) Cardiograph C ) Sonography D ) All of these
Ans C ) Sonography
) During the propagation of the wave through a medium, the do not change their positions.
A ) Properties
.
B ) Particles
C ) Waves
D ) Vibrations
Ans B ) Particles
..
) SONAR consists of a and a detector.
A ) Transmitter
B ) Reflector C ) Refractor D ) Deflector
Ans A ) Transmitter
) Pitch of sound depends upon of the wave.
A ) Quality
B ) Frequency C ) Loudness D ) Wavelength
Ans B ) Frequency
) In SONAR, R stands for …………….
A ) Radar
B ) Reflected C ) Ranging D ) Receiving
Ans C ) Ranging
) During the propagation of sound wave through a medium, there is a change in density and of
the medium.
A ) Pressure B ) Texture C ) State
D ) Pitch
Ans A ) Pressure
) The incident sound wave, reflected sound wave and the normal lie in different planes.
A ) True
B ) False
Ans B ) False
) Longitudinal waves consist of alternate …………… and ……………
A ) Crests & troughs
B ) Waxing and waning
C ) Compressions & rarefactions Electric and magnetic field vectors
D )
.
Ans Compressions & rarefactions ..
C )
) The value of amplitude determines the loudness of the sound.
A ) False
B ) True
Ans B ) True
) Thin membrane in the cavity of the middle ear.
A ) Stapes
B ) Eardrum
C ) Eustachian tube
Ans B ) Eardrum
) Ultrasonic sounds have frequency ……………
A ) Less than 20 hz B ) Above 10000 hz C ) Above 20000 hz D ) Below 20000 hz
Ans C ) Above 20000 hz
) Our brain retains sound for 0.1second.
A ) True
B ) False
Ans A ) True
) If the temperature of the medium is increased four times, then the velocity of the sound ……………
A ) Remains the same
B ) Doubles
C ) Reduces
D ) Increases four times
Ans B ) Doubles
) In Sonography, the sound reflected from the internal organs is fed into computer to get the images.
A ) True
B ) False
Ans A ) True
91 )
| Column
– A |
Column
– B |
| i. Outer ear | a. Eardrum |
| ii. Middle ear | |
| b. Pinna | |
| c. Cochlea | |
.
in.
| Column
– A |
Columnaga
– B |
| i. Outer ear | a. Cochlea |
| ii. Middle ear | |
| b. Pinna | |
| Column
– A |
Column
– B |
| i. Outer ear | |
| a. Pinna | |
| ii. Middle ear | b. Eardrum |
A )
B )
C )
Ans
| Column
– A |
Column
– B |
| i. Outer ear | |
| a. Pinna | |
| ii. Middle ear | b. Eardrum |
B )
) Bats, mice , dolphins can produce ……………
A ) Audible sound
B ) Infra sound
C ) Ultrasound
D ) None of these
Ans C ) Ultrasound
) Which of the statements is not true for the sound waves?
A ) Sound travels faster in water than in air.
B ) Sound travels as a longitudinal wave in a gas.
Due to the propagation of sound, compressions and rarefactions are set up in gaseous
C ) medium.
D ) Presence of moisture in atmosphere does not affect the speed of sound. Ans D ) Presence of moisture in atmosphere does not affect the speed of sound. 94 ) Sound does not travel through ……………
A ) Glass
B ) Vacuum
C ) Pure water
Ans B ) Vacuum
) For sound waves, the angle of incidence is the angle of reflection.
A ) Greater than
B ) Less than
C ) Equal to
D ) Parallel to
.
Ans C ) Equal to
..
) Female foeticide is now a cognizable offence in India.
A ) True
B ) False
Ans A ) True
) is the relation between the frequency (υ) & time period (T) of a sound wave.
A ) υ = T
B ) υ = λT
C ) υ = 1 / T
D ) λυ = T
Ans C ) υ = 1 / T
) is the maximum value of pressure or density indicated by A.
A ) Frequency
B ) Velocity
C ) Amplitude
D ) Wavelength
Ans C ) Amplitude
) If the frequency of the wave is 100 Hz and its wavelength is 0.2 m, then its wave speed is ……………….
A ) 20 m/s B ) 75 m/s C ) 300 m/s D ) 600 m/s
Ans A ) 20 m/s
) waves gives rise to a chain of compression and rarefaction.
A ) Light
B ) Medium C ) Sound D ) Large
Ans C ) Sound
) The value of frequency determines the of the sound.
A ) Noise B ) Music C ) Pitch
D ) All of these
Ans C ) Pitch
) The velocity of sound in air is at 0°C as compared to room temperature.
A ) More
.
B ) Less C ) Infinite D ) Zero
Ans B ) Less
..
) The speed of sound in air at 0°C is 332 m/s. The velocity of sound in air at 20°C is ……………………
A ) 344 m/s B ) 364 m/s C ) 384 m/s D ) 324 m/s
Ans A ) 344 m/s
) In waves, particles oscillate up and down about their mean positions.
A ) Electromagnetic
B ) Transverse
C ) Polarised
D ) Longitudinal
Ans B ) Transverse
) A person standing before a cliff shouts & hears the echo after 1.6 seconds. If the speed of sound in air is 340 m/s, the distance between the person and cliff is ………………..
A ) 544 m B ) 272 m C ) 292 m D ) 212.5 m
Ans B ) 272 m
) A smooth surface is required for the reflection of sound.
A ) True
B ) False
Ans A ) True
) Mirror is a good absorber of sound.
A ) False
B ) True
Ans A ) False
) The distance between two consecutive crests in a wave produced in string is 5 cm. If two complete waves pass through any point per second, then the velocity of the wave is ……….………
A ) 2.5 m/s B ) 10 m/s C ) 5 m/s D ) 20 m/s
Ans B ) 10 m/s
.
) For an echo to be heard distinctly, the minimum distance from the source is 34.4 m
..
A ) True
B ) False
Ans B ) False
) Borelli and Viviani were the first to calculate the of sound.
A ) Wavelength
B ) Density C ) Pressure D ) Speed
Ans D ) Speed
) The speed of sound in air
A ) 340m/s2 B ) 330m/s C ) 340m/s
Ans C ) 340m/s
) If the density of oxygen is 16 times to that of hydrogen, the corresponding ratio of velocity of sound is
………………
A ) 1 : 4
B ) 4 : 1
C ) 2 : 1
D ) 1 : 16
Ans A ) 1 : 4
) If the time period of oscillation is 0.05s, the frequency of sound wave is ………………..
A ) 10 Hz B ) 20 Hz C ) 30 Hz D ) 40 Hz
Ans B ) 20 Hz
) SONAR is based on technology.
A ) Infrasound B ) Ultrasound C ) Radar
D ) None of these
Ans B ) Ultrasound
) SONAR stands for ……………
A ) Sound Naval & Regional system
B ) Sound Newsletter & Ringing system
C ) Sound Nomination & RTohaemreinwgas asnteemrror starting the application. Please try
D ) Sound Navigation & Ranging system.
..
Ans D ) Sound Navigation & Ranging system.
) Peculiar funnel like shape that collects and passes sounds into the middle ear.
A ) Middle ear B ) Outer ear C ) Inner ear
Ans B ) Outer ear
) Echo can be heard multiple times due to continuous reflections.
A ) True
B ) False
Ans A ) True
) A is necessary for the propagation of sound waves.
A ) Light
B ) Sound
C ) Medium
D ) Pressure
Ans C ) Medium
) An echo is the repetition of the original sound.
A ) True
B ) False
Ans A ) True
) Velocity of sound is lowest in ………….. .
A ) Solids B ) Liquids C ) Gases
Ans C ) Gases
) The structure resembling the shell of a snail.
A ) Tympanic cavity
B ) Pinna
C ) Cochlea
Ans C ) Cochlea
) Sound waves are waves.
A ) Electromagnetic
B ) Transverse
C ) Polarised
D ) Longitudinal
Ans D ) Longitudinal
.
) Velocity of the sound wave is given by the formula.
..
A ) Velocity=Time/ Distance
B ) Velocity = Wavelength x Frequency
C ) Velocity = Time period/ Wavelength
Ans B ) Velocity = Wavelength x Frequency
.
