Grade 10 Physics Exam Review Sheet

The point at which rays or waves meet after reflection or refraction, or the point from which diverging rays or waves appear to proceed is _____ .

• focal point

• mirror’s center

• mirror’s pole

A virtual image cannot be formed on a screen.

• True

• False

Convex lens is a_____________.

• converging lens

• diverging lens

• plane mirror

Concave lens is a_____________.

• converging lens

• diverging lens

• plane mirror

Focal length is positive for both concave and convex lenses.

• True

• False

The wave behavior in following figure is ___________.

• diffraction

• refraction

• reflection

The wave behavior in following figure is ___________.

• diffraction

• refraction

• reflection

• Interference

A light beam has speed c in vacuum and speed v in a certain plastic. The index of refraction n of this plastic is ______

• n = c/v

• n = (v/c)2

• n = v/c

Light enters air from oil. The angle of refraction will be _____ .

• greater than the angle of incidence

• equal to the angle of incidence

• less than the angle of incidence

Light goes from material having a refractive index of n1 into a material with refractive index n2. If the refracted light is bent away from the normal, what can you conclude about the indices of refraction?

• n1 > n2

• n1 = n2

• n1 < n2