There is a metal screen on the front window of a microwave oven. This screen is essential because it
A) prevents electric charge from accumulating on the window.
B) protects the window from splatters that may occur when food inside the oven boils.
C) reflects microwaves and keeps them inside the oven.
D) prevents the glass from breaking in response to the rapid heating of its inner surface and the thermal stresses that result.

Question

Quizplus · Accepted Answer

The metal screen on the front window of a microwave oven is designed to reflect microwaves, keeping them inside the oven. This ensures that the microwave radiation, which cooks the food, does not escape out into the environment where it could potentially harm users.

There Is a Metal Screen on the Front Window of a Microwave