Question

an convex mirror used for rear view of an automobile has a radius of curvature of 3.5 M if a bus is located at 5.0 m from the mirror find position nature and size of the mirror​

Answer 1

Answer: 2.69 or 2.7m

Explanation: We are given

object distance(u)= 5m (by sign convention u is negative for convex mirror so u=-5m)

focal distance= Radius of curvature/2

so, f= 3.5/2 again by sign convention f is negative for a convex mirror. so f=-3.5/2

using mirror formula; $1/v + 1/u = 1/f$

v is the image distance

now putting all the values in the equation we'll get v= -2.69m

nature of image is virtual and erect.