Physics
The most non-polluting and efficient lighting device is —
- CFL
- Fluorescent light
- LED
- Electric bulb
Current Electricity
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Answer
LED
Reason — The use of LED (light emitting diode) bulbs for lighting reduces the consumption of energy drastically. It is also helpful in reducing global warming and the harmful effects of mercury used in fluorescent lights.
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Related Questions
A current 0.2 A flows in a wire of resistance 15Ω. Find the potential difference across the ends of the wire.
An efficient use of energy results in :
- increase in the emission of greenhouse gases
- a reduction in the cost of energy
- a reduction in the emission of green house gases
- both (b) and (c)
IEA is the short form of —
- Indian Energy Association
- Indian Eco Academy
- International Energy Agency
- International Eco Academy
LED stands for:
- Long lasting electric device
- Least efficient diode
- Light emitting diode
- Laser emission device