Multiple choice

The principle underlying a micro wave is similar to ____.

  1. heat generated by nuclear power

  2. thermal radiation

  3. radioactivity

  4. electromagnetic waves

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Microwaves work by generating electromagnetic waves that excite water molecules in food, creating heat. This process is fundamentally based on thermal radiation - the transfer of heat through electromagnetic waves.