Question

For a concave mirrorr, if virtual image is formed, the graph between `m` and `u` is of the form
A.
B.
C.
D.

Answer 1

Correct Answer - B
In concave mirrorr, if virtual images are formed , `u` can have values zero and `f`
At `u=0,m=(f)/(f-u)=(f)/(f)=1`
At `u=f,m=(f)/(f-u)=-(f)/(-f-(-f))=oo`