Substituting energy efficient Compact Fluorescent Light bulbs (CFL) for standard incandescent bulbs will save on an average upto 6,000 megawatts of electricity each year.
Raise questions : a) ? b) ?

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Solution

a. How much of electricity can be saved using CFL?
b. Why should we use CFL?

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Question 11

Why are compact fluorescent lamps (CFLs) preferred over electric bulbs?

The most non-polluting and efficient lighting device is :

(a) CFL (b) LED

Which of the following device is most efficient for the lighting purpose :

LED, CFL, Fluorescent tube light, Electric bulb.

Which element is used as a filler gas in fluorescent and incandescent light bulbs?

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