Question

An object of 2cm height place before convex mirror image size is 0.5cm.if mirror focal length is 50cm find object distance.
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Answer 1

Answer:

152 cm in front of the mirror

Explanation:

f=50cm

h=2cm

h'=0.5cm

m=h'/h=0.5/2=0.25

m=f/(f-u)

0.25=50/(50-u)

12.5-0.25u=50

u=(50-12)/(-0.25) = -38/0.25= -152cm