Question

Magnification produced by a mirror is -1.5.Find the distance of the image and focal length of the Mirror when an object placed at 15cm from the mirror.
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Answer 1

Answer:

m=-v/u

here u=-15

v=-1.5×15=-22.5

we have 1/v+1/u=1/f

so the ans comes -9 m

see pic for calculation

hope so helpful..