Question

The magnifucatin product by a mirror +1/2 is

Answer 1

It can either be a convex mirror or concave mirror. It depends upon the position of the object.

We have m =+1/3

We know that m= - v/u

u is always negative so in order to get magnification positive v must be negative.

That means the image should be virtual.

If the object is kept between pole and the focus of the mirror, then it will form a virtual image behind the mirror and v will be +. Hence, the mirror will be a concave mirror or a convex mirror.

If the object is kept beyond focus of the mirror then the image will be - ve ( concave mirror) or +ve(convex mirror). Hence, mirror will be a convex mirror