The condition under which a microwave oven heats up a food item containing water molecules most efficiently is:

Options

A. The frequency of the microwaves has no relation with natural frequency of water molecules
B. Microwaves are heat waves so always produce heating
C. Infra -red waves produce heating in a microwave oven
D. The frequency of the microwves must maathc the resonant frequency of the water molecules

Answer

A

Explanation

CONCEPTUAL