Lakhmir Singh & Manjit Kaur - Physics

Book: Lakhmir Singh & Manjit Kaur - Physics

Chapter: 3. Sources of Energy

Subject: Physics - Class 10th

Q. No. 2 of Very Short Answer Type Questions-Pg-161

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Which of the two is more energy efficient : filament type electric bulb or CFL ? Why?

CFLs are more energy efficient as they last from 8-10 times longer, use about 75% less energy, and produce 90% less heat while delivering more light per Watt.

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