Reflection and Refraction

Front

What is reflection?

Back

Reflection is the bouncing back of light waves when they hit a surface that does not absorb the light.

Front

What is refraction?

Back

Refraction is the bending of light waves as they pass from one medium to another, changing speed.

Front

What type of image is formed by a concave mirror?

Back

A concave mirror can produce real, inverted images or virtual, upright images depending on the object's distance from the mirror.

Front

What type of image is formed by a convex mirror?

Back

A convex mirror always produces virtual, upright, and smaller images.

Front

What is a plane mirror?

Back

A plane mirror is a flat mirror that reflects light to form a virtual image that is the same size as the object.

Front

What happens to light when it enters a denser medium?

Back

When light enters a denser medium, it slows down and bends towards the normal line.

Front

What is the normal line in reflection and refraction?

Back

The normal line is an imaginary line perpendicular to the surface at the point of incidence where light strikes.

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.

Front

What is total internal reflection?

Back

Total internal reflection occurs when light hits a boundary at an angle greater than the critical angle, causing it to reflect entirely back into the medium.

Front

What is the critical angle?

Back

The critical angle is the angle of incidence above which total internal reflection occurs.