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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
Related Questions: - Time taken by light to cross a glass slab of thickness 4 mm and refractive index 3 is
- A solid which is transparent to visible light and whose conductivity increases
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Topics: Electromagnetic Waves
(28)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Time taken by light to cross a glass slab of thickness 4 mm and refractive index 3 is
- A solid which is transparent to visible light and whose conductivity increases
- Light of frequency 8×10¹⁵ Hz is incident on a substance of photoelectric work
- For non-conductors, the energy gap is
- A series combination of n₁ capacitors, each of value C₁, is charged by a source
Topics: Electromagnetic Waves (28)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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