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Sound Physics

Covers sound production, properties, transmission, and measurement

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

In humans, where is the voice box located?

  1. The lower end of the windpipe
  2. The middle of the windpipe
  3. The upper end of the windpipe
  4. None of these
Question 2 Multiple Choice (Single Answer)

The length of the vocal chords of women is about

  1. 10 mm
  2. 15 mm
  3. 20 mm
  4. 25 mm
Question 3 Multiple Choice (Single Answer)

Which of the following statements is false?

  1. When we pluck the strings of a guitar, the only sound we hear is the sounds of the vibrating strings.
  2. When we strike a drum, the sound we hear is the sound of the stretched membrane as well as of the body of the drum.
  3. When we pluck the strings of a sitar, the sound we hear is that of the body as well as the strings.
  4. None of these
Question 4 Multiple Choice (Single Answer)

Which of the following statements is false?

  1. Sound can travel though liquids.
  2. Sound can travel through gases.
  3. Sound can travel through solids.
  4. Sound cannot travel through all solids, liquids or gases.
Question 5 Multiple Choice (Single Answer)

Which of the following organs in human beings vibrate(s) to produce sound?

  1. Muscles attached to the vocal chord
  2. Lungs
  3. Vocal chords
  4. Tongue
Question 6 Multiple Choice (Single Answer)

Above what loudness does a sound become physically painful?

  1. 60 dB
  2. 70 dB
  3. 80 dB
  4. 90 dB
Question 7 Multiple Choice (Single Answer)

What is the correct pathway of sound through ear?

  1. Outer ear – ear drum – ear canal – inner ear – brain
  2. Outer ear – ear canal – ear drum – inner ear – brain
  3. Outer ear – ear drum – inner ear – ear canal – brain
  4. None of these
Question 8 Multiple Choice (Single Answer)

Which of the following statements is false?

  1. A drum produces a low pitched sound because it vibrates with a low frequency.
  2. A whistle has a high frequency and therefore, produces a sound of a higher pitch.
  3. A loud roar of a lion is low pitched and has a high amplitude.
  4. A bird makes a feeble high pitched sound, which has a high frequency and amplitude.
Question 9 Multiple Choice (Single Answer)

Ultrasound equipment works at frequencies not less than

  1. 500 Hz
  2. 10000 Hz
  3. 15000 Hz
  4. 20000 Hz
Question 10 Multiple Choice (Single Answer)

Sounds of the following amplitudes and frequency are given as measured. Identify the loudest sound and the shrillest sound.

(a) 60 dB, f
(b) 65 dB, 4f
(c) 75 dB, 2f
(d) 80 dB, 3f

  1. (a), (b)
  2. (b), (c)
  3. (a), (c)
  4. (d), (b)
Question 11 Multiple Choice (Single Answer)

Sound from a source A is measured to be 20 dB, while that from a source B is measured to be 80 dB. If the amplitude of sound at A is a, then the amplitude of sound at B is

  1. 2a
  2. 4a
  3. 16a
  4. none of these
Question 12 Multiple Choice (Single Answer)

Which of the following statements is false?

  1. Installation of silencing devices in home appliances reduces noise pollution in residential areas.
  2. TV and music systems must be run at low volume to reduce noise pollution.
  3. Planting of trees along the roads in residential areas adds to noise pollution as the leaves rustle in the wind.
  4. Noisy operations and noise producing industries should be set up away from residential areas to adhere noise levels laws.
Question 13 Multiple Choice (Single Answer)

What is the frequency of a pendulum which oscillates 60 times in 1 second?

  1. 1 Hz
  2. 60 Hz
  3. 3600 Hz
  4. None of these
Question 14 Multiple Choice (Single Answer)

Which of the following musical instruments cannot be played by striking it?

  1. Manjira
  2. Drum
  3. Ektara
  4. Tabla
Question 15 Multiple Choice (Single Answer)

The to and fro, or back and forth motion of an object is termed as

  1. circular motion
  2. vibration
  3. uniform motion
  4. rectilinear motion
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