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Science Affairs Physics

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Which of the following are true regarding the compact fluorescent lamps now available in market for home use?

1. They use less power (about 20%) compared to filament type bulbs for same amount of light.

2. They operate at higher voltages.

3. They are narrower and shorter than common fluorescent tubes.

Select the correct answer from the codes given below:

1, 2 and 3

1 and 2 only

2 and 3 only

1 and 3 only

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Explanation:

1st statement is incorrect i.e. compact fluorescent lamps use less power compared to filament bulbs for same amount of light.
A compact fluorescent lamp (CFL), also called compact fluorescent light, energy-saving light, and compact fluorescent tube, is a fluorescent lamp designed to replace an incandescent light bulb; some types fit into light fixtures designed for incandescent bulbs.