Kaplan Physics: Lenses

Question 1

in mirrors:

i> 0 =
i<0 = 
m <1 = 
m> 1 = 
-m = 
\+m =

Answer 1

i> 0 = real image (in front of mirror)
i<0 =  virtual image (behind mirror)
m <1 = smaller than object
m> 1 = image is larger than object
-m = inverted image
\+m = upright image

Question 2

plane mirrors always produce ___ images, meaning that the i __ 0

Answer 2

virtual images, meaning that the i <0 (behind the mirror)

Question 3

the center of curvature is ____ the focal point

Answer 3

TWICE the focal point

Question 4

an inverted image in a mirror is always ____, an upright image in a mirror is always ____

Answer 4

inverted image = REAL
upright image = virtual
(IR, UV)

Question 5

in lenses:
 \+i = 
-i = 
\+ r = 
-r= 
\+f = 
-f= 
\+m = 
-m = 
\+ o = 
- o =

Answer 5

+i = opposite side of the lense from the light source
-i = image appears on same side of lense from the light
+ r = convex lense
-r= concave lense
+f = convex lense
-f= concave lense
+m = upright image
-m = inverted image
+ o = same side as light sourse
- o = image appears on opposite side as light source

Question 6

focal point equation for real lenses

Answer 6

1/f = (n-1)(1/r1 - 1/r2)

Question 7

magnification for mirrors

Answer 7

m = -i/o

Question 8

magnification for multiple layeredlenses

Answer 8

mtot = m1 x m2 x m3

Question 9

in a diverging lense, outline what youd see on a ray diagram

Answer 9

1) parallel ray gets refracted along the focal point on the object/SAME side of the lense
2) focal line moves as though itll go through the focal point on the OPPOSITE side of the lens, and then it gets refracted parallel.
3) center of lense line will continue travelling normally.

Question 10

in a converging lense, outline what you’d see on a ray diagram

Answer 10

1) parallel principle axis –> focal point on OTHER side
2) focal point on SAME side –> parallel principle axis
3) center of lense stays the same.

Question 11

in a convex mirror, outline what you’d see on a ray diagram

Answer 11

1) parallel to principle axis –> reflect back across the line of the focal point on OPPOSITE side.
2) focal point on OPPOSITE side –> reflect back across parallel to principle axis

Question 12

in a concave mirror, outline what you’d see on a ray diagram

Answer 12

1) parallel to principle axis –> ray reflects focal point on SAME side.
2) focal point on SAME side –> parallel to