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Sound

Sound

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Questions

Question 1 Multiple Choice (Single Answer)

In which of the following conditions of the vocal cords is a sound of low frequency is produced?

  1. Vocal cords being tight and thin
  2. Vocal cords being tight and thick
  3. Vocal cords being loose and thick
  4. Vocal cords being loose and thin
  5. None of the above
Question 2 Multiple Choice (Single Answer)

Which of the following is/are an example to show that sound is produced by vibrating objects?

a. Sound produced by a bicycle bell.
b. Sound produced by a stretched rubber band.
c. Sound produced by our vocal cords.

  1. Only a
  2. Only a and b
  3. Only b and c
  4. Only c
  5. All of the above
Question 3 Multiple Choice (Single Answer)

In which of the following material mediums, sound cannot travel?

a. Solid
b. Liquid
c. Gas
d. Vacuum

  1. Only a and b
  2. Only b
  3. Only a and c
  4. Only d
  5. Only b and d
Question 4 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. Sound is produced when an object moves to and fro rapidly.
b. The energy required to make an object vibrate and produce sound is produced by some outside source.
c. Sound of a radio speaker is produced due to the vibrating air columns of the speaker.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 5 Multiple Choice (Single Answer)

Match the following:
a. Sound produced by vibrating air column 1. Bicycle bell
b. Sound produced by vibrating membranes 2. Flute
c. Sound produced by vibrating plates 3. Tabla
  1. a - 2, b - 3, c - 1
  2. a - 2, b - 1, c - 3
  3. a - 1, b - 3, c - 2
  4. a - 1, b - 2, c - 3
  5. a - 3, b - 2, c - 1
Question 6 Multiple Choice (Single Answer)

Due to which of the following reasons, sound cannot be heard on the surface of moon?

a. Due to absence of gravity.
b. Due to absence of air on moon.
c. Due to uneven terrain on moon.

  1. Only a and b
  2. Only a
  3. Only b and c
  4. Only b
  5. Only c
Question 7 Multiple Choice (Single Answer)

Which of the following is/are not a part of the middle ear?

a. Hammer
b. Anvil
c. Stirrup
d. Cochlea

  1. Only a and b
  2. Only a
  3. Only b and c
  4. Only c
  5. Only d
Question 8 Multiple Choice (Single Answer)

Which of the following is a unit of loudness of sound?

  1. Decibel
  2. Hertz
  3. Newton
  4. Joules
  5. Pascal
Question 9 Multiple Choice (Single Answer)

Match the following:
a. Amplitude of vibrations 1. is the time taken by a vibrating object to complete one vibration
b. Time-period of vibrations 2. is the maximum displacement of a vibrating object from its central position
c. Frequency of vibrations 3. is the number of vibrations made in one second
  1. a - 1, b - 3, c - 2
  2. a - 1, b - 2, c - 3
  3. a - 2, b - 3, c - 1
  4. a - 2, b - 1, c - 3
  5. a -3, b - 1, c - 2
Question 10 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. The vocal cords are attached to the muscles, which change the tension in the cords and the distance between the cords.
b. The lungs pass a current of air between the two vocal cords, which causes them to vibrate and make sound.
c. The larynx is situated in our throat at the top of the trachea.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. None of the above
Question 11 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. The function of anvil in the middle ear is to pass the vibrations from the hammer to the stirrup.
b. The outer part of the ear is called pinna and is attached to a long passage called ear canal.
c. Three tiny bones in the middle part of the ear act as a system of levers and amplify sound vibrations coming from the cochlea.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 12 Multiple Choice (Single Answer)

Which of the following statements is/are false:

a. When an object vibrates, then the air around it also starts vibrating in exactly the same way and carries the sound to our ears through the vibration of its molecules.
b. Human beings produce sound by using the voice box which is called the 'cochlea'.
c. The human voice box contains two ligaments known as the vocal cords which produce sound due to their vibrations.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 13 Multiple Choice (Single Answer)

Due to its __________, ultrasound has a greater penetrating power than ordinary sound.

  1. very low frequency
  2. very high amplitude
  3. very high frequency
  4. very low amplitude
  5. none of the above
Question 14 Multiple Choice (Single Answer)

The different sounds produced by different singers or different musical instruments can be distinguished on the basis of a characteristic of sound called ____________.

  1. frequency
  2. pitch
  3. loudness
  4. timbre
  5. none of the above
Question 15 Multiple Choice (Single Answer)

The range of audible frequencies of sound for human hearing is from _________.

  1. 0 - 20 hertz
  2. 20 - 20,000 hertz
  3. 20,000 - 40,000 hertz
  4. 40,000 - 60,000 hertz
  5. none of the above
Question 16 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. The loudness of sound depends upon the amplitude of vibrations of the vibrating object.
b. The loudness of sound is inversely proportional to the square of amplitude of vibrations of the sound producing object.
c. The pitch of sound is directly proportional to its frequency.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 17 Multiple Choice (Single Answer)

Match the following:
a. Violin 1. a wind type musical instrument
b. Cymbals 2. a plate type musical instrument
c. Trumpet 3. a stringed musical instrument
  1. a - 1, b - 2, c - 3
  2. a - 2, b - 1, c - 3
  3. a - 2, b - 3, c - 1
  4. a - 3, b - 1, c - 2
  5. a - 3, b - 2, c - 1
Question 18 Multiple Choice (Single Answer)

Which of the following is/are the uses of ultrasonic waves?

  1. Ultrasonic waves are used as a diagnostic tool in medical science.
  2. Ultrasonic waves are used in the treatment of muscular pain and in a disease called arthritis.
  3. Ultrasonic waves are used to measure the depth of sea or ocean.
  4. Ultrasonic waves are used to check the growth of foetus.
  5. All of the above
Question 19 Multiple Choice (Single Answer)

Which of the following frequency ranges of sound can be produced by a vibrating simple pendulum?

  1. 25 - 50 Hz
  2. 0 - 20 Hz
  3. 200 - 250 Hz
  4. 24,000 - 25,000 Hz
  5. 1400 - 1500 Hz
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