In the given figure, if object is placed at a distance 9 cm from $O_{1}$ then find the image distance (in cm ) from $O_{2}$ . ( $R = 9 cm$ for both surface)

Question

In the given figure, if object is placed at a distance 9 cm from O 1 ​ then find the image distance (in cm ) from O 2 ​ . ( R = 9 cm for both surface)

TestHub · Accepted Answer

At surface 1: u 1 ​ = − 9 , μ 1 ​ = 1 , μ 2 ​ = 2 , R = + 9 ; v 1 ​ 2 ​ − − 9 1 ​ = + 9 2 − 1 ​ ⇒ v 1 ​ = ∞ At surface 2 : m 2 ​ = ∞ ; m 1 ​ = 2 , m 2 ​ = 1 , R = − 9 ; v 1 ​ − ∞ 2 ​ = − 9 1 − 2 ​ ⇒ v = 9 cm from 2

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