The Invisible Cloak
  • 1. What is the main material used to create the invisible cloak?
A) Cotton
B) Metamaterials
C) Plastic
D) Glass
  • 2. Which phenomenon allows the invisible cloak to work?
A) Magnetic fields
B) Thermal insulation
C) Light bending
D) Sound absorption
  • 3. Who is credited with the research on invisibility cloaks?
A) Isaac Newton
B) Albert Einstein
C) Nikola Tesla
D) David Smith
  • 4. In which year was the concept of an invisibility cloak first demonstrated?
A) 1995
B) 2010
C) 2000
D) 2006
  • 5. What challenges do scientists face in creating invisibility cloaks?
A) Limited bandwidth
B) Excessive weight
C) High costs
D) High visibility
  • 6. What is the public perception of invisibility cloaks mainly based on?
A) Science fiction
B) Historical artifacts
C) Military reports
D) Natural phenomena
  • 7. What scientific principle do invisibility cloaks often rely on?
A) Quantum entanglement
B) Relativity
C) Transformation optics
D) Thermodynamics
  • 8. How do invisibility cloaks affect the appearance of objects?
A) They redirect light around them
B) They emit light
C) They change color
D) They absorb all light
  • 9. What is a major ethical concern regarding invisible cloaks?
A) Cost to produce
B) Privacy invasion
C) Material waste
D) Global warming
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