Angles Of Incidence

Question 0

Magnification

Answer 0

m=-i/o

Question 1

Optics equation

Answer 1

1/f=1/O+1/I

Question 2

Focal length for spherical mirrors

Answer 2

F = 1/2 r

Question 3

The diameter of the MIRROR is NOT = to what?

Answer 3

The diameter of a whole sphere

Question 4

How does the magnification of an object change when the object approaches the focal point?

Answer 4

Magnification INCREASES

Question 5

What occurs for a positive value of f, o, I, and m

Answer 5

F= converging lens/mirror
O= real
I= real
M= upright

Question 6

What occurs for a negative value of f, I, o, m?

Answer 6

F= Diverging, lens/mirror
I= virtual
O= virtual
M= inverted

Question 7

What do mirrors and lenses do to light respectively

Answer 7

Mirrors reflect light while lens’s refract light

Question 8

Where is a real image located for a mirror and for a lens

Answer 8

A real image is located:
In front of a mirror
Behind a lens

Question 9

Where is a virtual image located for a mirror and for a lens?

Answer 9

Lens: in front
Mirror: behind

Question 10

CONVERGING SYSTEM:

Answer 10

Convex lens or concave mirror

1. If o is greater than 2f: real, inverted, minimized image.
2. If o is equal to 2f: real, inverted, and |m|=1 ( m is getting bigger as we are approaching focal point)
3. If o is between 2f and f: real inverted and magnified
4. Equal to f: no image; image at infinity
5. Less than f: virtual upright and magnified

Question 11

Diverging system:

Answer 11

Concave lens or convex mirror.

1. Object us greater than f: VIRTUAL UPRIGHT MINIMIZED

Question 12

MyopiA

Answer 12

Nearsighted I.e cannot see objects far away. We use a DIVERGING lens

Image is formed in front of the retina

Question 13

Hyperopia

Answer 13

Farsighted. Ie cannot see close like when you get old..,

We use a CONVERGING LENS

Question 14

For a two lens system ( contact lens and eye lens)

Answer 14

The image made by the 1st lens becomes the object of the 2nd lens

Question 15

The power of a lens is=?

Answer 15

1/f

Question 16

A negative prescription means what then for the focal length?

Answer 16

A negative (-f) and therefore a DIVERGING lens! Yay that’s what we learned from the previous flash cards!!

Question 17

Law of reflection:

Answer 17

The angle of incidence equals the angle of reflection

Question 18

Snells Law

Answer 18

N1sin€1=n2sin€2

Question 19

Index of refraction

Answer 19

N= c/v

Question 20

When a light ray enters a higher medium

Answer 20

The light ray bends toward the normal

Question 21

When a light ray enters a lower medium

Answer 21

The light ray bends away from the normal

Question 22

What is the critical angle

Answer 22

(Sin€critical=30degrees)

I think the critical angle is 90 degrees

Question 23

When does 0 refraction occur (TOTAL INTERNAL REFLECTION)

Answer 23

When Snells law doesn’t apply

Question 24

Apparent depth

Answer 24

Apparent depth is always less than the actual depth. Why? Because our brain does not account for the bending of light that occurs when it enters a lower medium (air)

Question 25

Apparent Height

Answer 25

Always greater than the actual height