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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
- P-type semiconductors are made by adding impurity element
- In potentiometer experiment, a cell of emf 1.25V gives balancing length of 30 cm
- A particle performing uniform circular motion has angular momentum
- If the earth shrink such that its mass does not change but radius decreases to one
- In the experiment for determination of velocity of sound in air,
Topics: Electromagnetic Waves (28)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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