Question

When an object is placed at a distance of 80cm from a concave spherical mirror ,the magnification produced is, -1/3. Where should the object be placed to get a magnification of, -1/6

Answer 1

Answer:

Explanation:

For case 1

Please use magnifying formula wrt u and f i.e. m = f/f-u so u will get f = -20cm

For case 2nd f will remain same so use same formula for u

m = f/f-u

U = - 100cm