Reflection and Wave Behavior Concepts

Mr. Fullerton introduces the concept of reflection, focusing on wave behavior at boundaries. He explains the law of reflection, where the angle of incidence equals the angle of reflection, and discusses two types of reflection: diffused and specular. The video includes sample problems to illustrate these concepts and concludes with additional resources for further learning.

What are the possible outcomes when a wave encounters a boundary?

• It can only be absorbed.

• It can only be reflected.

• It can only be transmitted.

• It can be reflected, transmitted, or absorbed.

How is the angle of incidence defined in the context of wave reflection?

• The angle between the wave and the surface.

• The angle between the wave and the reflected wave.

• The angle between the wave and the normal to the surface.

• The angle between the wave and the boundary.

According to the law of reflection, what is the relationship between the angle of incidence and the angle of reflection?

• The angle of incidence is always greater.

• The angle of reflection is always greater.

• They are always equal.

• They are always different.

What type of surface causes diffused reflection?

• A smooth, flat surface like a mirror.

• A rough, irregular surface like paper.

• A transparent surface like glass.

• A shiny surface like metal.

Which type of reflection occurs when parallel rays reflect off a smooth surface?

• Diffused reflection.

• Specular reflection.

• Scattered reflection.

• Refracted reflection.

In a scenario where a light ray strikes a boundary at 30°, what is the angle between the incident and reflected rays?

• 120°

• 90°

• 60°

• 30°

When wavefronts hit a barrier, which direction do they travel after reflection?

• In a random direction.

• In a direction determined by the angle of incidence.

• In a direction parallel to the barrier.

• In the same direction as they came.

If a light ray reflects off a mirror at an angle of 25°, what was the angle of incidence?

• 45°

• 90°

• 65°

• 25°

For which angles of incidence does the law of reflection hold true?

• Angles greater than 45° only.

• All angles of incidence.

• Angles less than 45° only.

• An angle of exactly 45° only.

What is the primary takeaway regarding the law of reflection?

• It only applies to light waves.

• It is dependent on the type of surface.

• It applies universally to all angles of incidence.

• It only applies to angles greater than 45°.