Optics

Question 1

Lens concepts

Mirrors vs lenses

Answer 1

Mirror = object and observer on same side.

Lens = object and observer on different sides.

Question 2

Lens concepts

Thin lens equation

Answer 2

Question 3

Lens concepts

Far- and nearsightedness

Answer 3

Nearsightedness is corrected by diverging lenses that compensate for over-bending of light rays.

Farsightedness is corrected by converging lenses that compensate for under-bending of light rays

Question 4

Lens concepts

Focal length

Answer 4

Question 5

Lens concepts

Magnification

Answer 5

Question 6

Lens concepts

Optical power

Answer 6

Question 7

Lens concepts

Alternative thin lens equation using p and q

Answer 7

1/f=1/p+1/q

Question 8

Mirrors and lenses

Name the light rays, image, and magnification of concave mirrors

Answer 8

light rays: convergent

image:
Real, inverted if object is further than focal point.

Virtual, upright if object is closer than focal point.

No image if object is at focal point

magnification: Larger if inside the center of curvature, smaller if outside.

Question 9

Mirrors and lenses

Name the light rays, image, and magnification of convex lens

Answer 9

light rays: convergent

image:
Real, inverted if object is further than focal point.

Virtual, upright if object is closer than focal point.

No image if object is at focal point

magnification: Larger if inside the center of curvature, smaller if outside.

Question 10

Mirrors and lenses

Name the light rays, image, and magnification of convex mirror

Answer 10

light rays: Divergent

image: Always virtual, upright

magnification: smaller

Question 11

Mirrors and lenses

Name the light rays, image, and magnification of concave lens

Answer 11

light rays: Divergent

image: Always virtual, upright

magnification: smaller

Question 12

Optics concepts

Law of reflection

Answer 12

Describes behavior of light when it is reflected, ie strikes a mirror.
Angle of reflection is equal to angle of incidence

Question 13

Optics concepts

Total internal reflection

Answer 13

When light is reflected back into a medium rather than being refracted.

Occurs in scenarios of moving from high index of refraction to low index of refraction

The minimum angle of incidence to cause total internal reflection is called the critical angle

Question 14

Optics concepts

Dispersion

Answer 14

Separation of different wavelengths of light based on refraction

Question 15

Optics concepts

Critical angle

Answer 15