Question

An object is placed at a distance of 10cm from a convex mirror of focal length 15f. Find position, size, and nature of image

Answer 1

By using q = pf / p-f we get p = -30. This is the position of image 30 cm. Negative sign shows the nature that is virtual and erect.

And M=q/p so 30/10 we get 3 means the size of image will be 3times the size of object