Lesson: Reflection of Light Physics • 9th Grade

In this lesson, we will learn how to describe the paths of light reflected from specular and diffuse surfaces, applying the law of reflection.

Lesson Plan

Students will be able to

determine the angle of reflection of a reflected ray,
determine the position of a point in a reflected image of an object,
estimate the paths of reflected light rays to understand how flat surfaces produce specular reflection and irregular surfaces produce diffuse reflection.

Q1:

What is the incident angle of the light ray shown in the diagram?

Q2:

What is the incident angle of the light ray shown in the diagram?

Q3:

A light ray reflects from a mirror, as shown in the diagram. The length , the length , and the length . What is the length ?