Question

A candle flame is 3 cm long.It is placed at a distance of 3 m from a wall. Where and at what distance from a wall a concave mirror be placed so that the image of the flame is three times magnified?​

Answer 1

Answer:

height of flame( h1)=3cm

object distance (u)=-3cm

magnification (m)=-3cm

m=-v/u

-3=-v/-3

-v=-3×-3

v=-9

h2/h1=-v/u

h2/3=9/-3

h2=9×3/-3

h2=-9