The condition under which a microwave oven heats up a food item containing water…
Physics · Class 12 · CBSE — Electromagnetic Waves
The condition under which a microwave oven heats up a food item containing water molecules most efficiently is
- the frequency of the microwaves must match the resonant frequency of the water molecules
- the frequency of the microwaves has no relation with the natural frequency of water molecules
- microwaves are heat waves, so always produce heating
- infrared waves produce heating in a microwave oven
Answer
(A) the frequency of the microwaves must match the resonant frequency of the water molecules
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