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Physics CBSE Live product
Class 7
Light: Shadows and reflections
Sources of light and propagation
3.
LEDs and modern lights
Question:
2
m.
Choose the correct answer.
1.
Why are LED lamps preferred over traditional bulbs?
They heat up quickly
They are heavier and brighter
They last longer and use less electricity
They use more electricity
2.
LED stands for
Light Energy Device
Light Electricity Diode
Light Emitting Diode
Light Emitting Display
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