Question

What is doppler effect with example

Answer 1

Answer:

The Doppler effect is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source. 

Explanation:

Eg-when a vehicle sounding a horn approaches and recedes from an observer.

Answer 2

An increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other. The effect causes the sudden change in pitch noticeable in a passing siren, as well as the red shift seen by astronomers.

For example, if you ride a train past a stationary warning horn, you will hear the horn's frequency shift from high to low as you pass by. The actual change in frequency due to relative motion of source and observer is called a Doppler shift.

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