4F - 5. Mirrors and Lenses

What is the change in direction of light when it hits a shiny surface called?

• Absorption

• Refraction

• Reflection

• Diffraction

Tags

NGSS.MS-PS4-2

What is the line drawn at right angles to a surface where a ray hits called?

• Incident line

• Normal line

• Reflected line

• Refracted line

According to the law of reflection, what is true about the angle of incidence and the angle of reflection?

• They are complementary

• They are always different

• They are equal

• They are supplementary

What type of image is formed in a mirror?

• Real image

• Virtual image

• Diminished image

• Inverted image

What happens to light when it passes from air into glass?

• It speeds up

• It slows down and bends towards the normal

• It bends away from the normal

• It reflects off the surface

Tags

NGSS.MS-PS4-2

What is the refractive index a measure of?

• The temperature of a medium

• The speed of light in a medium

• The speed of sound in a medium

• The density of a medium

What type of lens is thicker in the middle than at the edges?

• Biconvex lens

• Biconcave lens

• Converging lens

• Diverging lens

What is the principal focus of a converging lens?

• The edge of the lens

• The center of the lens

• The point where rays converge

• The point where rays diverge

What type of image is formed when the Sun's rays are focused onto a piece of paper?

• Virtual image

• Real image

• Inverted image

• Upright image

Tags

NGSS.HS-PS4-3

What is the distance from the center of the lens to the principal focus called?

• Focal length

• Optical center

• Principal axis

• Image distance