Question

A car has a rear view mirror of radius of curvature 4m. Find the actual position of the bicycle behind the car if it appears to be at 0.5m from the mirror.

Answer 1

v=+0.5m
f=+4m
u=?
1/v+1/u=1/f
1/0.5+1/u=1/4
1/u=1/4-1/0.5
1/u=(1-8)/4
1/u=-7/4
u=-4/7

Answer 2

Answer:the object distance =0.66cm

Explanation:radius of curvature =4cm

R=2f

4=2f

F=2cm

Using mirror formula

1/u+1/v=1/f

1/u+1/0.5=1/2

Simplify

1/u=-3/2

u=-2/3

u= -0.66cm