Optics Quiz

What is reflection?

• The process of bouncing light off a surface

• The ability of a program to examine and modify its own structure, behavior, and state at runtime.

• The ability of a program to execute multiple tasks simultaneously

• The act of thinking deeply and carefully about something

When does reflection occur?

• When light or sound waves bounce off a surface and change direction.

• When light or sound waves travel in a straight line.

• When light or sound waves disappear completely.

• When light or sound waves pass through a medium.

What is the law of reflection?

• The angle of incidence is equal to the angle of reflection.

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

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

• The angle of incidence is not related to the angle of reflection.

What is refraction?

• The reflection of light off a surface.

• The bending of light as it passes from one medium to another due to a change in its speed.

• The absorption of light by a material.

• The scattering of light in all directions.

What causes refraction?

• Change in intensity of light

• Change in wavelength of light

• Change in speed of light

• Change in direction of light

What is the difference between concave and convex lenses?

• Convex lenses are thinner at the center and thicker at the edges.

• Concave lenses are used for magnification, while convex lenses are used for reducing image size.

• Concave lenses are thicker at the center and thinner at the edges.

• Concave lenses are thinner at the center and thicker at the edges, while convex lenses are thicker at the center and thinner at the edges.

What type of lens is a magnifying glass?

• diverging lens

• converging lens

• concave lens

• convex lens

What happens to light rays when they pass through a concave lens?

• The light rays converge or come together.

• The light rays diverge or spread out.

• The light rays remain parallel.

• The light rays bend towards the center of the lens.

What happens to light rays when they pass through a convex lens?

• They converge

• They diverge

• They reflect

• They scatter

What is the focal point of a lens?

• The focal point of a lens is where parallel rays of light diverge from.

• The focal point of a lens is where parallel rays of light intersect.

• The focal point of a lens is where parallel rays of light converge or appear to diverge from.

• The focal point of a lens is where parallel rays of light scatter.