Physics · Wave Motion and Sound
The frequency or pitch of a whistle of an approaching train continuously increases. This phenomenon is due to which of the following?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Big Bang theory
- 2Archimedes' principle
- 3Charles's law
- 4Doppler effect✓
Correct answer
Doppler effect
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