Identify the energy saving light bulb.

Incandescent bulb

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Compact fluorescent light bulb

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Light emitting diode bulb

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Both B and C

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Solution

The correct option is D Both B and C
CFL (Compact fluorescent light bulbs) and LED (Light emitting diode bulb) are used in place of incandescent bulb because they use about 1/7 $^{t h}$ of the power used by the incandescent bulb. Hence, they are highly efficient in saving electricity.
Thus, the correct answer is option D.

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