Question

A spherical mirror produces 3 times larger real image of an object when it is placed at 16cm in front of it calculate the position of the image and also state the type of mirror

Answer 1

$m = -3\\m = \frac{-v}{u} \\\frac{-v}{u} = - 3\\v = 3u\\v = -48cm$

Since m <1 , and the image formed is real, it must be a concave mirror

Answer 2

Answer:The mirror is concave as convex mirror always forms smaller image.

m=-v/u

-v=-3×-16

v=-48cm

m is taken negative because it's real image.

Explanation: