Question

an object 5 cm is placed at a distance of 20 CM in front of a convex mirror of radius of curvature 30 cm. find the position of the image its nature and size.

Answer 1

Answer:we know that 1/u+1/v=1/f

Which is called mirror formula

For convex mirror u =-20cm

R=2f

f=15cm

h=5cm

Explanation:1/u+1/v=1/f

1/(-20)+1/v=1/15

1/v=1/15+1/20

1/v=7/60

V=8.7142cm

m=f/f-u

=15/15+30

=0.333

m=hi/ho

Hi=m×ho

=0.333×5

=1.66cm