Question

Identify the wavelength and frequency of waves used for radar.

A. Wavelength: 10 cm, Frequency: 3 GHz
B. Wavelength: 5 m, Frequency: 60 Hz
C. Wavelength: 0.1 mm, Frequency: 30 THz
D. Wavelength: 100 m, Frequency: 3 MHz

Answer 1

Radar uses radio waves to detect and locate objects. The correct wavelength and frequency of waves used for radar are 10 cm and 3 GHz, respectively.

Step-by-step explanation:

The correct option that identifies the wavelength and frequency of waves used for radar is A. Wavelength: 10 cm, Frequency: 3 GHz. Radar typically uses microwaves in the radar frequency bands, which range from about 1 GHz to up to 40 GHz. The microwaves have shorter wavelengths that can range from a few millimeters to centimeters, allowing for the detection of smaller objects. The wavelength and frequency in the microwave range are inversely related as mentioned, with higher frequencies corresponding to shorter wavelengths.