Question

select the correct answer.
what causes light to bend when it moves from one transparent medium to another?
a. a change in amplitude
b. a change in color
c. a change in frequency
d. a change in speed

Explanation:

When light moves from one transparent medium to another, the phenomenon of refraction occurs. Refraction is caused by a change in the speed of light as it enters a different medium. The amplitude of light (related to its intensity) is not the cause of bending. The color of light is related to its frequency, and while the speed of light changes in different media, the frequency remains constant (in a vacuum - like conditions, and when considering refraction in non - dispersive or normal situations for the basic concept here). So, the key factor is the change in speed.

Answer:

D. a change in speed