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what is the power of the lamp if its lumious efficiency is 2 watt and its lumious intensity is 42 candela |
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Answer» Answer: I THINK Explanation: Luminous FLUX=Luminous intensity∗SOLID angle Total solid angle = 4 π So, Luminous flux = 700 x 4 π Luminous flux = Luminous EFFICIENCY x POWER => 700 x 4 π = 8.8 x power => Power of lamp = 1000 W Answer. 10 w
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