A dentist uses a mirror to examine a tooth. The tooth is 1.00 cm in front of the

Question

A dentist uses a mirror to examine a tooth. The tooth is 1.00 cm in front of the mirror, and the image is formed 10.0 cm behind the mirror. Determine (a) the mirror’s radius of curvature and (b) the magnification of the image.

Part B

  Suppose the dentist picks a different mirror which has twice the radius of curvature. The image formed will be _______ the mirror surface than/as the original image if it is placed at the same location as the original mirror.

options:

closer to

at the same distances from

farther from

closer to

at the same distances from

farther from

Explanation / Answer

OPTION A CLOSER TO IS CORRECT

1/1 -1/10 = 1/f =2/R 1-(.1) =2R 0.9R =2 R =2/0.9=2.22
f= 1.11 cm
R= 2.22 cm

ParT B= Closer because focal length is smaller then R

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