Question

*(11) A convex mirror has a focal length of
18 cm. The image of an object kept in front of the
mirror is half the height of the object. What is
the distance of the object from the mirror?​

Answer 1

Explanation:

HERE IS YOUR ANSWER

M = H2 = -V/U = 1/2

             = -V = U/2

         V = -4/2 

  1/V + 1/U = 1/F

  1/-U/2 + 1/U = 1/18

-2/U + 1/U  = 1/18

-U/U = 1/18

U = -18  

U = 18