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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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- The maximum and minimum intensities of two sources is 4:1. The ratio of amplitude is
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Topics: Electromagnetic Waves
(28)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The purpose of using heavy water in nuclear reactor is
- The maximum and minimum intensities of two sources is 4:1. The ratio of amplitude is
- The electric potential V at any point (x,y,z) all in meters in space is given by
- A body of mass 4 kg is accelerated upon by a constant force travels
- The distance travelled by an object along a straight line in time t is given by
Topics: Electromagnetic Waves (28)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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