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
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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
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
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