Physics for IGCSE & O level - Waves And Sounds (Section 3 - No. 41)
What is the effect of the Doppler effect?
Changing the amplitude of a wave.
Changing the frequency of a wave due to relative motion.
Causing waves to disappear.
Changing the speed of a wave.
ব্যাখ্যা
The Doppler effect changes the frequency due to relative motion.