Question

on: microwaves were originally used in which equipment during the world wars? answer options: select one of four sonar thermostats telescopes radars

Explanation:

During the world wars, microwaves were originally used in radars. Radars use microwaves to detect and locate objects. Sonar uses sound waves, thermostats are for temperature control, and telescopes are for observing celestial objects, none of which originally used microwaves in the context of world wars.

Answer:

D. Radars