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In a microwave oven, the food is kept in a plastic container and the microwave is directed towards it. The food is cooked without melting the container because

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Microwaves are diffracted by plastic container

The natural frequency of plastic container matches the frequency of microwave

The natural frequency of water matches the frequency of microwave

Microwaves cannot pass through plastic

answer is A.

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The food is cooked because of resonance between frequency of water molecules and microwaves.

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