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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
- A body with mass 5 kg is acted upon a force F=(-3i+4j) N.If its initial velocity at
- The equivalent resistance of two resistors connected in series is 6 Ω
- In Young’s double slit experiment, a third slit is made in between the double slits.
- In the diffraction pattern of a single slit
- A bar magnet with magnetic moment 2.5×10³ JT⁻¹ is rotating in horizontal plane
Topics: Electromagnetic Waves (28)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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