An object is kept at a distance of 5m in front of a spherical mirror, which forms its erect image at a distance of 2m from the mirror. What is the magnification? Is the mirror concave or convex?
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Answer:
object distance (u) = - 5m
image distance (v) = 2m
therefore,
magnification = -v/u
= -2/-5
= 0.4 m
It is a convex mirror.
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