JEE Main
- Exam
- JEE Main
- Subject
- Physics
- Chapter
- Electromagnetic Waves
JEE Main · Physics · Electromagnetic Waves
Radio waves are& in the frequency range of 3kHzto300GHz . In the...
Radio waves are& in the frequency range of . In the frequency spectrum of electromagnetic waves these waves are:
Options
- Ajust above the ultraviolet radiations.
- Bjust below the infrared radiations.
- Cbetween X-rays and gamma rays.
- Dnone of the above.
Correct answer
B. just below the infrared radiations.
Step-by-step solution
Radio waves are in the lowest frequency& range of the electromagnetic spectrum. Above that, we have infrared, visible, ultraviolet, X-rays and gamma rays. Like all other electromagnetic waves, radio waves also travel with the speed of light. The wavelength of radio waves is in the range of& .& Naturally occurring radio waves are produced by lightning or by astronomical objects. Artificially generated radio waves are used& for communication.