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We know from experience that the Doppler shift of sound from a moving car is easily...

We know from experience that the Doppler shift of sound from a moving car is easily detectable. Assuming light with a frequency of 9×1014 Hz, calculate the Doppler shift (the difference of the observed and emitted frequencies) for light from a car moving toward you at a speed of 220 m/s.

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Answer #1

Given:

v = 220 m/s

c = speed of light =

According to Doppler effect equation for the light source moving towards stationary observer, the observed frequency is

[where v = speed of source]

If the speed v is very small compared to speed of light c, then the above equation can be written as

Therefore, the Doppler shift will be [answer]

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