Understanding Light Refraction and Dispersion

What happens to the speed of light when it travels from air into a denser medium like glass?

• It remains the same.

• It increases.

• It decreases.

• It fluctuates randomly.

According to Snell's Law, what is the relationship between the angles of incidence and refraction?

• Their sines are proportional to a constant.

• They are equal.

• They are inversely proportional.

• Their cosines are equal.

When light moves from air into a prism, how does it refract?

• Towards the normal.

• Away from the normal.

• It does not refract.

• It refracts randomly.

What should you ensure when sketching light rays in a prism for exams?

• The rays should be perpendicular.

• The rays should be parallel.

• The rays should intersect.

• The rays should form a triangle.

Why does red light refract less than blue light when passing through a prism?

• Red light is more intense.

• Red light is absorbed by the prism.

• Red light travels faster in glass.

• Red light has a higher frequency.