An object of height $ 3 \mathrm{~cm} $ kept in front of a concave mirror, gives a real image of size $ 6 \mathrm{~cm} $. The magnification of the mirror is

Question

An object of height $ 3 \mathrm{~cm} $ kept in front of a concave mirror, gives a real image of size $ 6 \mathrm{~cm} $. The magnification of the mirror is, $ -2 $, $ 2 $, $ -0.5 $, $ 0.5 $

MARKS App · Accepted Answer

Given, The height of the object, h o = 3 cm The height of the image, h i = - 6 cm (Real images are always inverted and hence the negative sign) The magnification, m = h i h o - 6 3 = - 2

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