The condition under which a microwave oven heats up a food …

Physics Electromagnetic Wave Electromagnetic Spectrum MCQ (Single Correct)

The condition under which a microwave oven heats up a food item, containing water molecules, most efficiently is that

the frequency of the microwave must match the resonant frequency of the water molecules

the frequency of the microwave must be less than the natural frequency of water molecules

microwave are heat waves, so they will always produce heat

the frequency of the microwave must be greater the natural frequency of the water molecules

Text Solution

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The correct answer is:

Matching the frequency of microwave with resonant frequency of the water molecule will increase the intensity of electromagnetic wave.

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