State whether the following statement is true or false:
State whether the following statement is true or false:

If the angle of incidence is greater than the critical angle, light is not refracted at all, when it falls on the surface from a denser medium to a rarer medium.

Solution:

This statement is true.

There is no refraction when the angle of incidence of the light ray is greater than the critical angle. Instead, all of the light is reflected back into the denser material, which is glass in this example. Total internal reflection is the term for this.