Question

multiple choice question
the change in pitch that results from the relative motion of the source and the receiver is called the ______ effect.
doppler
frequency
harmonic
sound

Explanation:

The Doppler effect is a well - known phenomenon in physics. It describes the change in frequency (and thus pitch for sound waves) of a wave in relation to an observer who is moving relative to the wave source.

• Frequency is a property of a wave (number of oscillations per unit time), not an effect.
• Harmonic refers to a component of a complex wave with a frequency that is an integer multiple of a fundamental frequency.
• Sound is a type of wave, not an effect related to the change in pitch due to relative motion.

Answer:

Doppler