Mirrors can interfere with wireless signals because of what property?

• A. They reflect heat
• B. Their silver backing can hinder the signal from the transmitter
• C. They absorb RF energy
• D. They amplify RF energy

Answer: (B)

Mirrors reflect wireless energy because they have a conductive metal backing that acts like a mirror for radio waves. A strong metal surface doesn’t let RF energy pass through easily; it bounces off, which can prevent the signal from reaching the receiver or redirect it away, creating weaker reception or dead zones. This is why a mirror placed between a transmitter and receiver can interfere with the signal. The other options don’t fit: a mirror primarily reflects RF energy, not absorbs it or amplifies it, and heat reflection isn’t the cause of wireless interference.