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Doppler Effect

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Explanations 1

The Doppler Effect is the name of the phenomenon in which the perception of a wave's frequency differs depending on the observer's velocity relative to the source of the wave. T…
By Sujay Kazi

Problems 2

A sound source of frequency 512 Hz is producing 6 beats with a guitar. If the string of guitar is stretched slightly then beat decreases. The original frequency of guitar is:
A police-car is chasing a crook driving a stolen vehicle. The police-car travels 15 m/s , while the crook travels at 20 m/s. If the police siren rings at a frequency of 5000 Hz.…