Thin lens formula

Electricity and Magnetism Level 2

Diagram [A] above shows a biconvex lens through which a collimated beam travelling along the lens axis is focused on a spot (known as the focal point) at a distance of 5 cm 5\text{ cm} from L , the center of the lens. If we locate an object 2 cm 2\text{ cm} to the left of L as in diagram [B] , then where will be the position of the image of the object?

10 3 \frac{10}{3} cm to the right of L 3 3 cm to the right of L 10 3 \frac{10}{3} cm to the left of L 3 3 cm to the left of L

Lakshan Dumpa by Lakshan Dumpa , 24, India

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1 solution

Victor Powell
Apr 27, 2014

The Lens Makers Formula is the following: (1/f)=(1/r 1)+(1/r 2)

1 Helpful 0 Interesting 0 Brilliant 0 Confused

I used the correct formula (1/obj)+(1/image)=(1/f). (1/2 10^-2)+(1/i)=(1/5 10^-2) but i can't get the answer.

padma vathi - 7 years ago

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