The model was made by a scientist to show the behavior of a light ray.

Question

Why might a scientist make this model of a light ray?
A.
to explain that light travels in a curved line until it passes from one material into another

B.
to explain that light travels in a straight line until it passes from one material into another

C.
to explain that light travels in a curved line even when it passes from one material into another

D.
to explain that light travels in a straight line even when it passes from one material into another

Answer 1

The correct answer is:

B. to explain that light travels in a straight line until it passes from one material into another.

This is because light generally travels in straight lines in a uniform medium, but can change direction (refract) when it passes from one medium to another, such as from air to glass.