Question

An object 5cm. high is placed 20cm. away from a convex mirror of focal length 30cm. Find location of image and magnification.

Answer 1

h=5         u=  -20        f= 30        v=?
    v =uf/u-f
       =-20×30÷-20-30
       =-60÷-50
       =1.2
m=-v÷u
    =-1.2 ÷ -20
    =0.06