A dentist uses a mirror to examine a tooth that is 100 cm in

A dentist uses a mirror to examine a tooth that is 1.00 cm in front of the mirror. The image of the tooth is formed 5.0 cm behind the mirror.

(a) Determine the mirror\'s radius of curvature. cm

(b) Determine the magnification of the image.

o = 1 cm ; i = -5 cm

a)we know from lens eqn

1/f = 1/i + 1/o

f = i x o / (i + o)

f = 1 x -5/(1 - 5) = -1.25

R = 2f = 2 x -1.25 = -2.5 cm

Hence, R = 2.5 cm

b)m = -i/o = -(-5)/1 = 5

Hence, M = 5 x