Curved refracting surfaces

Question 1

What is a sag

Answer 1

Perpendicular distance from center of any chord to surface

Question 2

What is a chord

Answer 2

Straight line connecting any two points on an arc or circumfrance of a circle

Question 3

What type of surface is a concave surface

Answer 3

A negative power, the higher the power the more divergence takes place

Question 4

What type of surface is a convex surface

Answer 4

Posistive power, will converge light, higher the power, the move convergence takes place

Question 5

What is in the object space of a curved refracting surface

Answer 5

Real object

Virtual image

To the left of the curved refrating surface, negative

Question 6

What is in the image space of a curved refracting surface

Answer 6

Real image

Virtual object

To the right of the curved refracting surface, posistive

Question 7

What is primary focal point

Answer 7

Object posistion that yield an infinite image distance

Question 8

What is secondary focal point

Answer 8

Image posistion that corresponds to infinite object posistion

Question 9

What is focal length dependent on

Answer 9

Power of lens

Question 10

What is the significance of the primary and secondary focal point of a mirror

Answer 10

They are the same point

Question 11

How does the change of position affect the image with regards to focal length

Answer 11

obj distance less than f = inverted, real, bigger

Obj dist. more than f less than 2f = inverted, real, same size

Obj dist. more than 2f = inverted, real, smaller