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