Reflection of Light

What is a ray diagram?

• A ray diagram is a type of cooking technique used in baking pastries.

• A ray diagram is a graphical representation of the path that light takes when it encounters an optical system.

• A ray diagram is a type of mathematical equation used to calculate projectile motion.

• A ray diagram is a type of musical notation used in orchestral compositions.

Explain how light reflects off a smooth surface using a ray diagram.

• Light reflects off a smooth surface by creating a shadow

• Light reflects off a smooth surface by changing colors

• Light reflects off a smooth surface by following the law of reflection, where the angle of incidence is equal to the angle of reflection.

• Light reflects off a smooth surface by bending the rays at different angles

Draw a ray diagram showing the reflection of light off a plane mirror.

• The ray diagram should show the reflected ray bending away from the mirror

• The ray diagram should show the incident ray bending towards the mirror

• The ray diagram should show an incident ray, a normal line, and a reflected ray all meeting at the point of reflection on the mirror.

• The ray diagram should only show the incident ray and the reflected ray without a normal line

What are the two laws of reflection?

• The two laws of reflection are: 1. The angle of incidence is equal to the angle of reflection. 2. The incident ray, the reflected ray, and the normal to the surface all lie in the same plane.

• The incident ray and the reflected ray are parallel to each other.

• The angle of incidence is greater than the angle of reflection.

• The angle of reflection is always 90 degrees.

How does the angle of incidence compare to the angle of reflection?

• Equal

• Random

• Opposite

• Greater

Describe the process of drawing a ray diagram for reflection.

• Draw the reflected ray before the incident ray

• Start by drawing the object instead of the mirror

• The process involves drawing the mirror, incident ray, measuring the angle of incidence, drawing the reflected ray, and locating the image of the object.

• Skip measuring the angle of incidence

In a ray diagram, what does the incident ray represent?

• Reflection of light after hitting a surface

• Path of light after passing through a medium

• Shadow cast by an object

• Path of light before hitting a surface or interface

What is the role of the normal line in a ray diagram?

• The normal line is used to determine the color of the reflected light

• The normal line helps determine the angle of incidence and reflection accurately.

• The normal line indicates the direction of the light source

• The normal line is irrelevant in a ray diagram

Explain how to determine the direction of the reflected ray in a ray diagram.

• The reflected ray will be perpendicular to the incident ray

• The reflected ray will be on the opposite side of the normal line compared to the incident ray.

• The reflected ray will be at a 45-degree angle to the incident ray

• The reflected ray will be parallel to the incident ray

Why is it important to accurately represent angles in a ray diagram for reflection?

• Angles have no impact on reflection outcomes.

• To confuse observers and make the diagram more complex.

• To determine the direction of reflected rays and predict the behavior of light accurately.

• It is unnecessary to accurately represent angles in a ray diagram.