Math, asked by freefire9055, 7 months ago

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Answered by biswaspronab15

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8. The illumination at a point on a working plane directly below the lamp is to be 100 lumens/m2.The lamp gives 256CP,uniformly below the horizontal plane. Determine the height at which the lamp is suspended. Also find illumination at a point on the working plane 1.2 metres from the vertical axis of the lamp.

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