Answer the following quesion with true/false : in the phenomenon known as Doppler Effect, electrons are ejected when light shines on certain substances.

The answer is True. Doppler Effect is defined as "the change (increase of decrease) found in wave, sounds or light as the soure and observer slowly walks away. Examples of this would be ripples formed when ducks are swimming in the lake or the sound of the sirens, going higher as they moved to another destination