Question

focal length of a lens 50 centimetre and another -50 CM what is the nature of lens and its power used by
each of them​

Answer 1

Explanation:

Answer. Power of a lens is always reciprocal to the focal length. So, aconvex lens with 50cm focal length has a power of (1/0.5) Dioptre(D) or 2d

Answer 2

Answer:

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Explanation:

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