Light emitting diodes (LEDs) are preferred over incandescent bulbs primarily because:

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Incandescent bulbs work by heating a tungsten filament until it glows, converting roughly 90% of electrical energy into wasted heat and only 10% into light. LEDs are solid-state semiconductors that emit light through electroluminescence. They convert almost all their electrical energy directly into light, making them significantly more efficient and cooler.

Light emitting diodes (LEDs) are preferred over incandescent bulbs primarily because: MCQ with Answer and Explanation

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