SOUND

Sound waves travel very fast in
1. air
2. metals
3. vacuum
4. liquids
The amplitude of the sound wave decides its
1. speed
2. pitch
3. loudness
4. frequency
What kind of musical instrument is a sitar?
1. String instrument
2. Percussion instrument
3. Wind instrument
4. None of these
Noise is produced by
1. vibrations with high frequency
2. regular vibrations.
3. regular and periodic vibrations.
4. irregular and non-periodic vibrations
The range of audible frequency for the human ear is
1. 2 Hz to 2000 Hz
2. 20 Hz to 2000 Hz
3. 20 Hz to 20000 Hz
4. 200 Hz to 20000 Hz
When we say that sound travels in a medium, what do we mean?
1. The particles of the medium travel.
2. The source travels.
3. The disturbance travels.
4. The medium travels.
A person can be identified by his voice. What determines this distinguishing feature?
(i) Amplitude
(ii) Pitch
(iii) Loudness
1. Only (i)
2. Only (ii) and (iii)
3. Only (i) and (iii)
4. (i), (ii) and (iii)
In human beings, which of the following produces the sound?
1. Larynx
2. Wind pipe
3. Eardrum
4. Lungs
An object oscillates 50 times in one second. What is its frequency?
1. 0.2 Hz
2. 0.02 Hz
3. 0.002 Hz
4. 50 Hz
In which of the three media does sound travel the fastest?
1. Air
2. Water
3. Steel
4. Speed is same in any medium
What is the cause for the difference in the voices of men, women and children?
1. Difference in larynx
2. Difference in lungs
3. Difference in vocal cords
4. Difference in wind pipe
Which of the following represents Hertz?
1. Second
2. Metre
3. 1/Second
4. 1/Metre
Eardrum is a part of
1. Sound producing organ
2. Skeletal system
3. Hearing organ
4. Reproductive organ
Noise pollution is harmful for
1. Human
2. Cat
3. Bird
4. All
Sound propagates maximum in
1. Gas
2. Liquid
3. Solid
4. All
Voice box or larynx of human process
1. Sound
2. Wind
3. Loudness
4. None
To an fro motion of an object is called
1. Waves
2. Amplitude
3. Vibration
4. All of the above
Sound is kind of
1. Work
2. Energy
3. Force
4. None
The pitch of sound depends on
1. frequency
2. amplitude
3. both of these
4. none of these
Large amplitude of sound vibrations will produce:
1. Loud sound
2. Meak sound
3. slow sound
4. Shreak
what is unpleasant sound called?
1. Noise
2. Sweet sound
3. Both
4. None
Sound usually travels through which medium to reach our ears?
1. Air
2. Water
3. Wood
4. Asbestos
Which of the following produces noise only?
1. Jet engine
2. Harmonium
3. Flute
4. Guitar
Ultrasonic sound
1. frequency greater than 20000 Hz
2. frequency below 20 Hz
3. frequency ranging from 20 Hz to 20000 Hz
4. None
Subsonic or Infrasonic sound
1. frequency greater than 20000 Hz
2. frequency below 20 Hz
3. frequency ranging from 20 Hz to 20000 Hz
4. None
sonic sound
1. frequency greater than 20000 Hz
2. frequency below 20 Hz
3. frequency ranging from 20 Hz to 20000 Hz
4. None
On what factors does the loudness or intensity of sound depend?
1. The amplitude of a sound wave
2. The area of a vibrating body
3. Distance from the source of sound
4. All of the above
On what factors does the pitch of sound depend?
1. Frequency
2. Amplitude
3. Loudness
4. The distance from source
Find the difference between a musical sound and noise.
1. Amplitude
2. Loudness
3. Vibrations
4. All of the above
Which of the following are the effects of noise pollution?
(i) Insomnia
(ii) Hypertension
(iii) Hearing impairment
1. Only (i) and (ii)
2. Only (ii) and (iii)
3. Only (i) and (iii)
4. (i), (ii) and (iii)
How is a musical note characterized by?
1. Loudness
2. Pitch
3. Timbre
4. All of the above
On what factors does the frequency of sound depend in wind instruments?
1. The length of the air column
2. The breadth of the air column
3. The force with which the wind is blown
4. All of the above

SOUND

Quiz