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Jada mat bola kar huhhh (x _ x) ( x_x) aur Gautam kya hua tumhe bAbu ? |
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Answer» er of a lens is defined as the reciprocal of the focal length. Lens power is MEASURED in dioptres (D). Converging (CONVEX ) lenses have positive focal lengths, so they ALSO have positive power values. Diverging (CONCAVE ) lenses have negative focal lengths, so they also have negative power values.ello ishu ji pehechana?MEKO flw q ni kr rhe hon? |
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