The radius of curvature of a convex mirror used as a rear view mirror in a moving car is 2.0 m. A truck is coming from behind it at a distance of 3.5 m. Calculate

(a) position, and


(b) size, of the image relative to the size of the truck. What will be the nature of the image ?

Radius of curvature , R = 2m

F = R/2 = 2/2 = 1 m


Object distance from mirror = 3.5m


Using the mirror formula,


(a) Image distance is 0.77 m behind the mirror


(b)m = v/u = 4.5 ; The nature of the image is Virtual and erect


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