Question 993Navigation General

70% to pass

What is the approximate wave length of an X Band Radar operating on a frequency of approximately 9500 MHz?

A 3 cm
B 10 cm
C 30 cm
D 100 cm
AI Explanation

The correct answer is A) 3 cm. The wavelength of an electromagnetic wave is inversely proportional to its frequency, according to the formula: wavelength = speed of light / frequency. Given that the X Band Radar operates at a frequency of approximately 9500 MHz, the wavelength can be calculated as 3 cm. The other options are incorrect because they do not match the calculated wavelength. Specifically, 10 cm, 30 cm, and 100 cm would correspond to lower frequencies that are not in the X Band range.

Related Questions
Q@q.QuestionNumber:When approaching a lock entrance, the visual signal displayed when a single lock... Q@q.QuestionNumber:The radar control used to reduce sea return at close ranges is the _____________... Q@q.QuestionNumber:The angle at the pole measured through 180°From the prime meridian to the meridi... Q@q.QuestionNumber:Which type of cloud is the classic "thunderhead"? Q@q.QuestionNumber:The velocity of a rotary tidal current will be decreased when the Moon is ______...

Ready to test your knowledge?

Take a Navigation General Practice Exam
Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
← Previous All Questions Next →

Want to practice with timed exams?

Download Coast Guard Exams for the full exam experience.

Get the App