Q: Which one among the following is the primary reason of microwave heating of water?
(a)Microwaves ionize water molecules.
(b)Water dipoles undergo rotational resonance at microwave frequencies.
(c)Microwaves produce standing waves in solids and liquids.
(d)Heating occurs due to induced currents only.
Correct Answer: (b)
The correct answer is (b): Water dipoles undergo rotational resonance at microwave frequencies.. Subject: Geography | Sub-topic: Physical Geography Note: This answer was determined through AI-based research. Verify against the official answer key when available.