An object is placed at a distance of 20 cm from the pole of a concave mirror of focal length 10 cm . The distance of the image formed is

Question

An object is placed at a distance of 20 cm from the pole of a concave mirror of focal length 10 cm . The distance of the image formed is, + 20 c m, + 10 c m, - 20 c m, - 10 c m

MARKS App · Accepted Answer

Given, f =- 10 c m , u = - 20 c m 1 f = 1 u + 1 v 1 v = 1 f - 1 u = 1 - 10 + 1 20 = - 1 20 v = - 20 c m

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