Physics – Mechanical and Electromagnetic Waves

1. What is the wavelength of a wave?

  1. The distance between two consecutive crests or troughs in a waveform
  2. The height from crest to trough
  3. The time taken for one complete cycle
  4. The number of cycles per second
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Answer: Option A. The distance between two consecutive crests or troughs in a waveform

2. What is the wave called if the components of medium oscillation are perpendicular to the direction of wave propagation?

  1. Longitudinal wave
  2. Transverse wave
  3. Mechanical wave
  4. Sound wave
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Answer: Option B. Transverse wave

3. What is the International System of Units (SI) unit used to measure propagation constant?

  1. Radians per gm
  2. Radians per hour
  3. Radians per second
  4. Radians per meter
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Answer: Option D. Radians per meter

4. What type of wave is an ultrasonic wave in air generated by a vibrating quartz crystal?

  1. Infrasonic waves
  2. Electromagnetic waves
  3. Longitudinal waves
  4. Radio Waves
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Answer: Option C. Longitudinal waves

5. Which among the following is correct about transverse mechanical waves?

  1. They involve oscillations perpendicular to the direction of energy transfer
  2. They involve oscillations parallel to the direction of energy transfer
  3. They can only travel through liquid
  4. They do not require a medium for propagation
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Answer: Option A. They involve oscillations perpendicular to the direction of energy transfer