Question

Which type of light waves/rays used in remote control and night vision camera ?

• A. Ultraviolet
• B. X-rays
• C. Infrared
• D. Microwaves

Answer 1

Answer:

C. Infrared

• Both remote controls and night vision cameras primarily use Infrared (IR) light waves.

• Inside the remote is a small LED that blinks in a specific pattern of invisible light flashes (like a digital Morse code). A receiver on your TV or appliance detects these flashes and translates them into commands like changing the channel or turning up the volume.