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Posted: **Sun May 22, 2022 7:04 am**

: A Student Wanted To Find The Focal Length Of A Concave Lens Using A Convex Lens With A Focal Length Of 10 Cm So He Plac 1 (18.81 KiB) Viewed 12 times

A student wanted to find the focal length of a concave lens using a convex lens with a focal length of 10 cm, so he placed a candle 15 cm away from the convex lens, so an image of the candle was formed on a diaphragm Find the focal length of a concave lens