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InterviewSolution
| 1. |
What is doppler effect??? |
| Answer» It is an increase in the frequency of the sound,light or other waves as the source and observer moves towards each other.the effect cause the sudden change in pitch noticeable in a passing Siren, as well as the red shift seen astronomers.<br>When ever there is relative motion between source, observer, medium then the frequency of the waves received by observer is always different from frequency of waves emitted by source | |