a dentist has a small mirror of focal length 16mm the mirror is holding at a distance of 8mm what is its magnification
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f = 16mm
u = -8mm
v = ?
m = ?
1/v + 1/u = 1/f
1/v = 1/f - 1/u
1/v = 1/16 - 1/-8
1/v = -24/-128
v = -128/-24
v = 5.33 mm
m = -v/u
= -5.33/-8
Therefore, m = 0.66625
u = -8mm
v = ?
m = ?
1/v + 1/u = 1/f
1/v = 1/f - 1/u
1/v = 1/16 - 1/-8
1/v = -24/-128
v = -128/-24
v = 5.33 mm
m = -v/u
= -5.33/-8
Therefore, m = 0.66625
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