Question

A dentist uses a mirror to produce an upright image of a tooth such that the image is magnified 2.83 times when the mirror is held 3.93 cm from the tooth.

The dentist's mirror is concave (coverging).

A: True B: False

What is the absolute value of the focal length of the dentist's mirror? (in cm)

A: 4.19

B: 6.08

C: 8.81

D: 1.28×101

E: 1.85×101

F: 2.69×101

G: 3.90×101

H: 5.65×101

Answer 1

options of part b is not clear in problem. So please match the option according to the result.