Question

The magnification of a concave mirror of object distance u and focal length 'f' is​

Answer 1

Answer:

Magnification, m = - v/u A/C to mirror formula, 1/f = 1/v + 1/u or, 1/v = 1/f - 1/u or, v = uf / (u -f) Therefore, m = v/u = f / u -f

Answer 2

Explanation:

Magnification, m = - v/u A/C to mirror formula, 1/f = 1/v + 1/u or, 1/v = 1/f - 1/u or, v = uf / (u -f) Therefore, m = v/u = f / u -f IN THE LAST STEP ITS GIVEN THAT m = v/u BUT IN THE FIRST STEP ITS GIVEN m = - v/u