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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 similar springs P and Q have spring constants Kp and Kq, such that Kp>Kq.
- Two particles of masses m₁ m₂ move with initial velocities u₁ and u₂
- A particle of mass m moves with constant speed along a circular path of radius r under
- The primary and secondary coil of the transformer have 50 and 1500 turns respectively
- The Rutherford scattering experiment proves that an atom consists of
Topics: Electromagnetic Waves (28)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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