For spherical mirror of object distance u, image distance v and focal length F. Then correct expression for magnification m is
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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 CAN YOU JUST TELL ME WHATS GOING ON..??
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