Question

when an object placed at a distance of 60 cm from convex mirror to get magnification 1/2
Where should object is placed to get magnification 1/3​

Answer 1

Answer:

let u=60

v=?

m=1/2

therefore,m=-v/u

1/2=-v/-60

2×-v=1×-60

-2v=-60

-v=-60/-2

v=30

in next step we had to take m=1/3

1/3=-30/u

-30×3=u

-90=-u

u=90