The energy differences in some of the rotational energy levels of the water molecule allow
A) X-rays to be produced.
B) cooking with microwaves.
C) visible spectral lines to be formed.
D) lasers to operate.

Question

Quizplus · Accepted Answer

The energy differences in the rotational levels of water molecules are in the microwave region of the electromagnetic spectrum. This is why microwave ovens can heat food, as the microwaves excite the rotational energy levels of water molecules in the food, causing them to heat up.

The Energy Differences in Some of the Rotational Energy Levels