How can we make a ray of light bend toward the normal?

Question

options:

We can make it travel through water
We can make it travel through water

We can make it travel from glass into air
We can make it travel from glass into air

We can make it travel through glass
We can make it travel through glass

We can make it travel from air into glass

Answer 1

A ray of light can bend toward the normal when it travels from a medium of lower density to a medium of higher density. Among the options provided, the correct choice is:

We can make it travel from air into glass.

In this case, when light moves from air (a less dense medium) into glass (a denser medium), it slows down and bends toward the normal.