KingCarnage3712
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Which of these events is an example of the Doppler shift?
The amplitude of a wave on a string increases as the frequency decreases.
The amplitude of sound from a tuning fork decreases due to damping.
The frequency of light from a star increases as it moves toward us.
The intensity of an electromagnetic wave increases with the field strength.
The velocity of an electromagnetic wave changes as its medium changes.

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andrewneal
The intensity of an electromagnetic wave increases with the field strength.

Answer;

The intensity of an electromagnetic wave increases with the field strength.

Explanation;

  • Doppler shift also Doppler effect occurs when the source of a wave form sends out waves at a regular rate or frequency, but there is a constant relative motion between the source and the observe, thus causing a change in frequency.
  • Electromagnetic waves are waves that do not require a material medium for transmission. Energy in electromagnetic waves is transferred through vibrations of electric and magnetic fields.
  • The strength of electric and magnetic field increases the intensity of an electromagnetic wave, which is an example of Doppler shift.

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