where should an object from a convex mirror of focal lenght 20cm be held so as to obtain an erect, d

Asked by twinkly_sony | 28th Jun, 2009, 07:59: PM

Expert Answer:

given: f =  20 cm; m = 1/ 2

since m = - v / u

v = -  u / 2

using (1 / f) = (1 / v) + (1 / u)

(1 / 20) = ( 2 / - u) + (1 / u) = -1 / u

object distance = - 20 cm

Due to some technical problem, ray diagram can not be uploaded.

Answered by  | 7th Jul, 2009, 04:14: PM

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