Q.2 [A] Difference between : 1. LED and Torch bulb LED Torch bulb.
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LEDs can be significantly more efficient than incandescent lamps, with white LEDs producing on the order of 100 lumens for every watt, compared to 8-10 lumens per watt of small incandescent bulbs. An LED flashlight will have a longer battery life than an incandescent flashlight with comparable output.
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Answer:
led will be operated by cells and torch will be operated by battery
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