Mirrors and Lenses

Front

What is a concave mirror?

Back

A concave mirror is a mirror that curves inward, resembling a bowl. It can focus light to a point and is used in applications like shaving mirrors and telescopes.

Front

What is a convex mirror?

Back

A convex mirror is a mirror that bulges outward. It diverges light rays, making objects appear smaller and farther away. It is commonly used as a rear-view mirror in vehicles.

Front

What is a plane mirror?

Back

A plane mirror is a flat mirror that reflects light without distortion. It produces a virtual image that is the same size as the object.

Front

What are convex lenses?

Back

Convex lenses are thicker in the middle and thinner at the edges. They converge light rays to a focal point and are used in magnifying glasses and cameras.

Front

What are concave lenses?

Back

Concave lenses are thinner in the middle and thicker at the edges. They diverge light rays and are used in glasses for nearsightedness.

Front

What is the focal point of a lens?

Back

The focal point is the point where parallel rays of light either converge (in convex lenses) or appear to diverge from (in concave lenses).

Front

What is the difference between real and virtual images?

Back

Real images can be projected on a screen and are formed by converging light rays, while virtual images cannot be projected and are formed by diverging light rays.

Front

What is the law of reflection?

Back

The law of reflection states that the angle of incidence is equal to the angle of reflection when light reflects off a surface.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, caused by a change in its speed.

Front

What is the purpose of a rear-view mirror in vehicles?

Back

A rear-view mirror is typically a convex mirror that allows drivers to see a wider field of view behind them, helping to enhance safety.