Optics quiz (lesson 1-4)

Question 1

What is the definition of a plane mirror?

Answer 1

A mirror with a flat reflective surface.

Plane mirrors create clear reflections.

Question 2

What type of reflection occurs on smooth, shiny surfaces?

Answer 2

Clear (Specular) Reflection.

This type of reflection produces a distinct image.

Question 3

What type of reflection occurs on rough, dull surfaces?

Answer 3

Diffuse Reflection.

Diffuse reflections scatter light in different directions.

Question 4

What is the Law of Reflection?

Answer 4

Light is reflected from a surface at the same angle it arrives.

This principle governs how light behaves when it hits reflective surfaces.

Question 5

What does a ray diagram help determine?

Answer 5

Where an image (A’) will appear when viewed through a mirror or lens.

Ray diagrams visualize the path of light rays to locate images.

Question 6

What is a virtual image?

Answer 6

An image location perceived by our brains when light travels in a straight line.

Virtual images cannot be projected onto a screen.

Question 7

What factors affect the clarity of a reflection?

Answer 7

The mediums involved.

Different materials reflect light with varying degrees of clarity.

Question 8

Fill in the blank: A ________ mirror is bumped out towards you.

Answer 8

Convex

Convex mirrors are often used for wider field visibility.

Question 9

What happens to light in diffuse reflection?

Answer 9

Light is scattered in different directions.

This scattering results in a less distinct image.

Question 10

True or False: Ray diagrams are only concerned with light that reaches our eyes.

Answer 10

True.

Only the rays that are observed contribute to the perceived image.