Question

What behavior of light proves that it is a wave? Hint: Will this only happen because light is a wave, what could it also be true of fast-moving particles?

A redshift and blueshift
B reflection of light
C light changes speed in glass and water
D absorption of light

Answer 1

A. Redshift and Blueshift

Step-by-step explanation:

It’s red shift and blue shift, because this only occurs when the frequency of the wave is made longer or shorter due to the movement of the source relative to the observer.