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QNEET-2013-Ph-1489: NEET 2013 Physics - Class 12 NEET-2013-Ph-1489 Solution: The condition under which a microwave oven heats up a food item …
The condition under which a microwave oven heats up a food item containing water molecules most efficiently is Microwaves are heat waves so always produce heating. Infra-red waves produce heating in a microwave oven. The frequency of the microwaves must match the resonant frequency of the water molecules. The frequency of the microwaves has no relation with natural frequency of water molecules.
Multiple Choice Options
- A Microwaves are heat waves, so always produce heating.
- B Infra-red waves produce heating in a microwave oven.
- C The frequency of the microwaves must match the resonant frequency of the water molecules.
- D The frequency of the microwaves has no relation with natural frequency of water molecules.
Step-by-Step Verified Solution
The natural frequency of vibration of the water molecules in the food item should be same as that of the frequency of microwaves.