Question

A convex mirror used for rear view mirror on an automobile has a radius of curvature of 3m. If

a bus is located at 5m from this mirror, find the position, nature and size of the image, if the

size of object 3m. ​

Answer 1

Answer:object distance (u)= -5m (always negative)

radius of curvature C = 3m

focal length = 3/2 = 1.5m.

with formula we know that ,

1/v +1/u = 1/f

1/v = 1/1.5 - 1/-5

1/v = -5 - 1.5 /-7.5

1/v = -6.5/-7.5

v = 1.15m

we must find magnification,

m= -v/u

= -1.15/-5

=0.23  

the image is formed on the opposite side of the object.so it will be virtual and erect.

and 0.23 is very small where the object is placed beyond C.

so the image is virtual ,diminished and erect.

Step-by-step explanation: