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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
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Topics: Electromagnetic Waves
(28)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two sources of sound placed close to each other are emitting progressive waves
- A particle of mass 1 mg has the same wavelength as an electron moving with a velocity
- The range of voltmeter is 10V and its internal resistance is 50Ω.
- If the minimum energy of photons needed to produce photoelectrons is 3 eV,
- A small oil drop of mass 10⁻⁶kg is hanging in at rest between two plates seperated
Topics: Electromagnetic Waves (28)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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