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Magical LED Lights
  • 1. What does LED stand for?
A) Laser Emitting Device
B) Long Electric Device
C) Light Emitting Diode
D) Luminous Energy Display
  • 2. What is the main advantage of LED lights over traditional incandescent bulbs?
A) Cost effectiveness
B) Brightness
C) Energy efficiency
D) Color variety
  • 3. Can LED lights change color?
A) No
B) Yes
C) Only once
D) Varies by brand
  • 4. What is a characteristic of LED lights that makes them popular for outdoor use?
A) Temperature sensitivity
B) Wavelength
C) Durability
D) Weight
  • 5. LED lights do not produce as much __________ as traditional incandescent bulbs.
A) Vibration
B) Heat
C) Noise
D) Light
  • 6. How long can LED lights typically last compared to traditional bulbs?
A) About the same
B) Only half as long
C) Slightly longer
D) Much longer
  • 7. LED lights are commonly used in __________ signs.
A) Wooden
B) Paper
C) Neon
D) Vinyl
  • 8. What does the term 'color temperature' refer to in LED lights?
A) Efficiency of light output
B) Time taken to change colors
C) Number of colors emitted
D) Warmth or coolness of light
  • 9. Which type of LED light can be controlled remotely using a smartphone?
A) Basic LED
B) Smart LED
C) Regular LED
D) Dumb LED
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