Physics · Electromagnetic spectrum (radio waves, microwaves, infrared, visible, ultraviolet, X-rays, Gamma rays), applications of electromagnetic waves
Microwaves are detected by
Microwaves are detected by
- A. barometer
- B. point contact diodes
- C. thermopiles
- D. the eye
Step-by-step solution
Microwaves are electromagnetic waves. Point contact diodes (also known as crystal detectors) are used to detect microwave signals because they rectify the high-frequency alternating current induced by microwaves. Other options: barometer measures atmospheric pressure, thermopiles measure thermal radiation (typically infrared), and the human eye cannot detect microwaves.