Question

Does light travel in a straight line when it travels from one

medium to another medium?​

Answer 1

Explanation:

One of light's characteristic properties is that, in a transparent medium like air, glass, or still water, it travels in a straight line. ... Only when light rays move from one medium to another, such as from air to water, are their linear paths altered.

Answer 2

Yes, light does travel in a straight line when it travels from one medium to another.

A way to prove it:

When you shine a torch in the dark, light appears to go straight outwards. This shows that light indeed does travel in a straight line.