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The condition under which a microwave oven heats up a food item containing water molecules most efficiently is
Options
(a) the frequency of the microwave must match the resonant frequency of the water molecules
(b) the frequency of the microwave has no relation with natural frequency of water molecules
(c) microwave are heat waves, so always produce heating
(d) infrared waves produce heating in a microwave oven
Correct Answer:
the frequency of the microwave must match the resonant frequency of the water molecules
Explanation:
Required condition: Frequency of the microwave = Resonant frequency of water molecules
Related Questions: - At what temperature will the rms speed of air molecules be double that of NTP?
- A capacitor of 2.5 μF is charged through a resistor of 4 MΩ. In how much time
- Which of the following atoms has the lowest ionisation potential?
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Topics: Electromagnetic Waves
(28)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- At what temperature will the rms speed of air molecules be double that of NTP?
- A capacitor of 2.5 μF is charged through a resistor of 4 MΩ. In how much time
- Which of the following atoms has the lowest ionisation potential?
- An artificial satellite is revolving round the earth in a circular orbit. Its velocity
- A stone of mass 1kg is tied to a string 4m long and is rotated at constant speed
Topics: Electromagnetic Waves (28)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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