Question

A convex mirror used for rear view of an automobile has a radius of curvature of 3.00 m .If a bus is located at 5.00 m from this mirror , find the position , nature and size of the image?

Answer 1

Virtual image

Beyond c

Diminished

Answer 2

R=3
f=R/2=3/2=1.5. u=-5


1/u+1/v=1/f
1/v=1/f-1/u
=1/1.5-1/(-5)
=1.5+5/7.5
1/v =6.5/7.5
v=7.5/6.5=1.15
the image is 1.15at the back of mirror

m=-v/u=1.15/-5=0.23
the image is virtual .
,erect and smaller in size by a factor of 0.23