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Optic axis of a thin equi-convex lens is...

Optic axis of a thin equi-convex lens is the x-axis. The co-ordinates of a point object and its image are `(-40 cm,1 cm) and (50 cm,-2 cm),` respectively. Lens is located at

A

`x=20 cm`

B

`x=-30 cm`

C

`x=-10 cm`

D

origin

Text Solution

Verified by Experts

The correct Answer is:
C
`m=-(2 cm)/(1 cm)=-2`
`rArr |v|=m|u|`
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