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A 60 W electric lamp gives off energy in the form of light at the rate of 7.5 J/s.

Asked by 19th March 2010, 10:41 AM
Answered by Expert
Answer:

Amount of energy given out in the form of light, 7.5 J/s = 7.5 W.

Amount of energy transformed into light = 7.5x100/60 = 12.5 %

Regards,

Team,

TopperLearning.

Answered by Expert 19th March 2010, 6:54 PM
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