NSC / Matric Doppler Effect — practice questions
6 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NSC / Matric Doppler Effect in the app →What does the Doppler effect describe?A car with its hooter sounding drives straight towards you. What happens to the sound waves that reach you?A siren stands still while a cyclist rides straight towards it. What frequency does the cyclist measure?Light from a distant galaxy arrives with its spectral lines shifted towards longer wavelengths. What does thatAn ambulance siren emits sound of frequency 400 Hz and the ambulance drives at 20 m/s straight towards a listeA Doppler flow meter sends ultrasonic waves into a blood vessel. Blood flowing towards the meter reflects wave