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You are driving on a divided highway at 30 m/s, and you encounter an emergency vehicle with a siren that is emitting a constant frequency. In which of the following situations will you hear the highest frequency from the siren?
A) The emergency vehicle is behind you, moving in your direction at 40 m/s.
B) The emergency vehicle is ahead of you, moving away from you at 40 m/s.
C) The emergency vehicle is ahead of you, moving toward you from the other direction at 40 m/s.
D) The emergency vehicle is in the lane next to you, moving in the same direction at 30 m/s.

Answer :

The correct option is : the emergency vehicle is in the lane next to you, moving in the same direction at 30 m/s.

  • Frequency is the number of waves that pass a fixed point in unit time; also, the number of cycles or vibrations undergone during one unit of time by a body in periodic motion.
  • A body in periodic motion is said to have undergone one cycle or one vibration after passing through a series of events or positions and returning to its original state.
  • The frequency of any phenomenon with regular periodic variations can be expressed in hertz.
  • Since you are driving on a divided highway at 30 m/s, the highest frequency to be heard should be close enough the source.
  • So the maximum frequency to be heard is possible when the emergency vehicle is in the lane next to you, moving in the same direction at 30 m/s.

To know more about frequency visit:

https://brainly.com/question/26474454

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