Question

According to sigh Convection, the focal length of ca concave lens is ________ and that of concave lens is _____

Answer 1

Answer:

If the image and object are on the same side of the lens, the image distance is negative and the image is virtual. For converging mirrors, the focal length is positive. Similarly, a converging lens always has a positive f, and a diverging lens has a negative f.

Explanation:

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Answer 2

Answer:

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According to sign convention, the focal. Lenght of a concave lens is negative(-) and that of convex lens is positive (+).

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