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Oscillations mcq. We covered all the Oscillations mcq in this post for free so that you can practice well for the exam.
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mcq on Oscillations for Students
Choose the statement that does not belong
a) Compressions are areas where particles are closely packed
b) In a density-distance graph, compressions appear at the crest of the wave
c) Rarefactions occur where particles are more spaced out
d) The valleys are shown as a straight line
Option d – The valleys are shown as a straight line
Bats are able to hunt during the night because
a) they have good vision
b) they can detect prey through their sense of smell
c) they emit ultrasonic sounds which bounce off objects and return, helping them locate prey
d) all of the above
Option c – they emit ultrasonic sounds which bounce off objects and return, helping them locate prey
Which of the following statements about sound is/are true? (i) Vibrating bodies produce sound. (ii) A medium is essential for sound to travel. (iii) Sounds with the same loudness will have the same pitch.
a) (i) & (iii)
b) only (iii)
c) (i), (ii) & (iii)
d) (i) & (ii)
Option d – (i) & (ii)
Which of these statements about the speed of sound is correct? (i) sound travels at a finite speed in a medium. (ii) sound travels slower in gases than in Solids. (iii) Increasing temperature raises the speed of sound.
a) only (i)
b) (i) & (iii)
c) (i), (ii) & (iii)
d) (i) & (ii)
Option d – (i) & (ii)
Identify the option that doesn’t fit with the others
a) Hertz (Hz) is the SI unit
b) Frequency equals the inverse of time period
c) Different frequencies result in the same pitch
d) Higher frequency leads to higher pitch
Option c – Different frequencies result in the same pitch
When a key on a mechanical piano is tapped gently, then pressed harder, what changes?
a) The sound becomes louder, but the pitch stays the same
b) Both loudness and pitch increase
c) The sound is louder, but pitch lowers
d) Neither loudness nor pitch changes
Option a – The sound becomes louder, but the pitch stays the same
Different objects vary in their vibration characteristics based on
a) their vibration frequency, producing different pitches
b) their frequency, yet the pitch remains constant
c) the time intervals they vibrate in
d) the amount of energy they use
Option a – their vibration frequency, producing different pitches
Before an Earthquake’s main tremor, the type of sound produced is
a) ultrasound
b) infrasound
c) audible sound
d) none of these
Option b – infrasound
Why does a sitarist adjust the tension of the strings before a concert?
a) To modify only the sound’s intensity
b) To change only the amplitude
c) To match the sitar’s frequency with other instruments
d) To adjust the loudness
Option c – To match the sitar’s frequency with other instruments
What is true about loud and soft sounds?
a) They have the same amplitude
b) Their frequency may be the same
c) Their wavelengths are identical
d) None of the above
Option b – Their frequency may be the same
The term describing the sound energy passing through a unit area per second is
a) Sound intensity or loudness
b) Sound amplitude
c) Pitch
d) Sound frequency
Option a – Sound intensity or loudness
Which of the following about sound speed is accurate?
a) It slows down when moving from Solids to gases
b) Speed increases with a rise in temperature
c) It is affected by the medium’s characteristics
d) All of these statements are true
Option d – All of these statements are true
If a sound source has a frequency of 100 Hz, how many vibrations occur in one minute?
a) 6000
b) 2000
c) 5500
d) 4500
Option a – 6000
Which frequency can humans hear?
a) 5 Hz
b) 27000 Hz
c) 5000 Hz
d) 50000 Hz
Option c – 5000 Hz
If a wave has amplitude A at distance r, what will it be at 2r?
a) A
b) 2A
c) A/2
d) A/4
Option c – A/2
Increasing a faint sound to a loud one involves increasing its
a) frequency
b) amplitude
c) speed
d) wavelength
Option b – amplitude
A wave with a frequency of 1000 Hz travels 600 meters in 2 seconds. How many wavelengths are in this distance?
a) 3.3
b) 300
c) 180
d) 2000
Option d – 2000
Auditorium seats are made of materials that absorb sound because
a) They minimize reverberation
b) They enhance sound quality
c) They increase sound speed
d) All of the above
Option a – They minimize reverberation
Sound is unable to travel through
a) Solids
b) liquids
c) gases
d) vacuum
Option d – vacuum
What is the minimum distance required for a clear echo to be heard?
a) 17 meters
b) 34 meters
c) 68 meters
d) 340 meters
Option a – 17 meters
Sound can be described by its
a) frequency only
b) amplitude only
c) speed only
d) frequency, amplitude, and speed
Option d – frequency, amplitude, and speed
Which material reflects sound most effectively?
a) Thermocol
b) Cloth curtains
c) Steel
d) Paper
Option c – Steel
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