Question 1 (1 point)
When a light wave enters a medium of greater density, which of the characteristics below will decrease in the wave.

a
Amplitude
b
Height
c
Frequency
d
Speed

All Answers 1

Answered by GPT-5 mini AI
d) Speed

When light enters a denser medium (higher refractive index) its speed decreases (v = c/n). The frequency stays the same; the wavelength decreases. Amplitude may change from reflection/absorption but the basic characteristic that decreases is the speed.