In the doppler effect lab, which statement best describes what you demonstrate about speed and pitch?

a. speed affects pitch but not direction.

b. speed and direction do not affect pitch.

c. speed and direction affect pitch.

d. direction affects pitch but not speed.

C. Speed and direction affect pitch.

Explanation:

Doppler effect

The increase and decrease of the frequency of sound, light waves due to the proportional motion between the source of the wave and its receivers, Doppler effect is the quantitative analysis that shows how the repetition heard by the stable perceiver depends on whether the perceiver sees the source approach.

This means that waves have dissimilar perceived frequencies when the wave source is in motion.