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NDA Physics — practice by topic

Browse 118 questions across 10 Physics topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Physics topics

Unit 1B: Kinematics: 2D Motion & Projectiles (41)Gravitation (31)Unit 1A: Kinematics: 1D Motion, Position & Velocity (17)Calorimetry (12)Light and Sound (11)Units (2)Formulas (1)Instruments (1)Optics & Magnetism (1)Vectors & Scalars (1)

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Sound is produced by:Read the answer and worked solution →The object that produces sound is called the:Read the answer and worked solution →In humans, sound is produced by the vibration of:Read the answer and worked solution →A tuning fork is usually shaped like the letter:Read the answer and worked solution →

Worked practice questions

Sound is produced by:

  1. vibration of an object
  2. heating an object
  3. cooling an object
  4. rotation of the Earth
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Correct answer: A. vibration of an object

Sound is produced by vibrations (periodic to-and-fro motion).

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The object that produces sound is called the:

  1. source
  2. receiver
  3. medium
  4. compressor
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Correct answer: A. source

Vibrating body that originates the sound is its source.

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In humans, sound is produced by the vibration of:

  1. vocal cords
  2. lips only
  3. tongue
  4. teeth
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Correct answer: A. vocal cords

Vocal cords inside the larynx vibrate to produce sound.

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