Physics · Electromagnetic Waves
The condition under which a microwave oven heats up a food item containing water molecules most efficiently is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Infrared waves are produced internally to heat the food items in a microwave oven.
- 2Microwaves are infrared heat waves, so they always produce heating regardless of frequency.
- 3The frequency of the microwaves has no relation with the natural frequency of water molecules.
- 4The frequency of the microwaves must match the resonant rotational frequency of the water molecules.✓
Correct answer
The frequency of the microwaves must match the resonant rotational frequency of the water molecules.
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