Question

a rear view mirror used in a bus has a radius of curvature 3.5m. if the driver of the bus locates a car at 10.0m behind the bus, find the position ,nature,and size of the image of the car.

Answer 1

"Here the radius of curvature is R=3.5 ,

Focal length f=R/2= 1.75m

Object distance u= -10cm,

Image distance v=?

Now you have to solve the equation.

Upon solving it you will get

1/f =1/v + 1/u

1/1.75 = 1/v - 1/10

v= 1.5 m

Magnification (m) = -v/u =0.15

Therefore, the image is real located 1.5 m on the other side of the mirror.

Hence, it is erect and diminished.

"