Question

The linear magnifying of a convex mirror of focal length is 15 cm is one-third what is the distance of the object from the linear magnifying of a convex mirror of focal length is 15 cm is one-third what is the distance of the object from the focus of mirror

Answer 1

Answer:

Acc to mirror formula

v=uf/(u-f)

v=15u/(u-15)

m=-v/u

1/3=-[(15u)/(u-15)]/u

1/3=-15/u-15

-45=u-15

u=-30cm

that's the object is placed 30 cm in front of the mirror. but as the focus of the convex mirror is placed to the right of the mirror therefore the distance of the object from the focus of the mirror will be 45 CM

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