Question

what is dopper effect?​

Answer 1

Answer:

Explanation:

an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move towards (or away from) each other. The effect causes the sudden change in pitch noticeable in a passing siren, as well as the red shift seen by astronomers.

Answer 2

Answer:

The waves of sound between two objects and waves are produced these waves are called dopper effect.