Lecture 4 - Curved Refracting Surfaces

Question 1

Real Object:

1. Emits _______ light
2. Object distance _______
3. Object vergence _______

Answer 1

Emits DIVERGENT light
Object distance negative
Object vergence negative

Question 2

Real Image:

1. When converging light leaves a refracting surface.
2. Object distance _______
3. Object vergence _______

Answer 2

1. When converging light leaves a refracting surfaces.
2. Image distance positive.
3. Image vergence positive.

Question 3

Virtual Object:

1. When converging light is incident on a surface.
2. Object distance _______
3. Object vergence _______

Answer 3

1. When converging light is incident on a surface.
2. Object distance is positive.
3. Object vergence is positive.

Question 4

Virtual Image:

1. When diverging light leaves a refracting surface.
2. Object distance _______
3. Object vergence _______

Answer 4

1. When diverging light leaves a refracting surface.
2. Image distance negative
3. Image vergence is negative.

Question 5

L < 0

Answer 5

Real Object

Question 6

L > 0

Answer 6

Virtual Object

Question 7

L’ > 0

Answer 7

Real Image

Question 8

L’ < 0

Answer 8

Virtual Image

Question 9

Positive Power Lens

RO el = infinity

Answer 9

–> RI el’ = f’

Question 10

Positive Power Lens

RO: el = f

Answer 10

–> RI: el’ = infinity

Collimating Lens!!!!!

Question 11

Negative Power Lens

RO: el = infinity

Answer 11

–> VI: el’ = f’

Question 12

Negative Power Lens

VO: el = f

Answer 12

–> RI: el’ = infinity

Question 13

Positive Power Lens

RO: el = 2f

Answer 13

–> RI: el’ = 2f’

Question 14

Negative Power Lens

VO: el = 2f

Answer 14

–> VI: el’ = 2f’

Question 15

A Lens clock measures S/focal power, but displays S/focal power

Answer 15

Measures s, but displaces focal power

Question 16

Lens clock red

Answer 16

Concave surface, aka MINUS power

Question 17

Lens clock black

Answer 17

Convex surface, aka PLUS power