Physics, asked by tanishabansal582, 10 months ago

An object is kept on the principal axis of convex lens as shown in the figure. Focal length of lens will be.

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Answered by HimaniVarshney

May be 20 cm is the right answer because the light rays from object were parallel to each other it is possible only when object is kept as focus of lens.

Answered by sakthikumar

20 cm is the answer

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