1. F = 1.75 cm 2F = C = 3.50 cm do = 3 cm ho = 1 cm F MEASURED
REFLECTION FROM A CONCAVE MIRROR - OBJECT BETWEEN F AND 2F (C-Radius of Curvature)
Scale: 1 cm = 1 cm
F = 1.75 cm
2F = C = 3.50 cm
do = 3 cm
ho = 1 cm
MEASURED
di = 4.6 cm
hi = 1.6 cm
Theoretical
Distance to image Height of image
1/do + 1/di = 1/f m = -di/do hi = m(ho)
1/3 + 1/di = 1/ m = -4.2/ hi = 1.4(1)
di = 4.2 cm m = hi = 1.4
% deviation = 9.52% % deviation = 14.29%
Image is real, in front of mirror, inverted and larger F C do di ho hi
An example of this situation is

2. di hi ho do F F = 1.85 cm 2F = C = 3.70 do = 1 cm ho = 1 cm C
REFLECTION FROM A CONCAVE MIRROR - OBJECT BETWEEN F AND MIRROR
Scale 2 cm = 1 cm
F = 1.85 cm
2F = C = 3.70
do = 1 cm
ho = 1 cm
Measured
di = 1.25 cm (scale 2.5)
hi = 1.85 cm (scale 3.7)
Theoretical
Distance to image m = -di/do
1/do + 1/di = 1/f m = -(-2.18)/1
1/1 + 1/di = 1/ m = 2.18
di = cm hi = 2.18 cm
%deviation 42.7% % deviation 15.14%
- virtual erect
Image is virtual, behind mirror, erect, larger
An example of this situation is hi ho do C F di

3. di do F ho C F = -1.85 cm 2F = C = 3.70 cm do = 1.85 cm ho = 1 cm hi
REFLECTION FROM A CONVEX MIRROR - OBJECT AT F BEHIND MIRROR
Scale 2 cm = 1 cm
Theoretical
Distance to image Height of Image
1/do + 1/di = 1/f m = -di/d0
1/ /di = -1/ m = -(-0.93)/1.85
di = -0.93cm (virtual) hi = 0.50(1) = .5cm (erect)
% deviation 29.03% % deviation 10%
F = cm
2F = C = 3.70 cm
do = 1.85 cm
ho = 1 cm
MEASURED
di = 1.2 cm (scale 2.2)
hi = 0.45 cm (scale 0.9) F C
An example of this situation is do ho hi di