Question

(3 Points)

Which statement correctly compares radio waves and microwaves?

A. Radio waves have a higher frequency than microwaves.

B. Radio waves have shorter wavelengths than microwaves.

C. Radio waves have lower radiant energy than microwaves.

D. Only radio waves are used in communication.

Answer 1

Answer:The correct answer is option C.

Step-by-step explanation:

Radio waves and microwaves both are the examples of electromagnetic waves.

Radio waves: These are waves with lowest frequency in the electromagnetic spectrum with longest wavelength.

Microwaves : These are the second lowest frequency waves in the electromagnetic spectrum with wavelength shorter than radio waves.

`E=h\\u`

E = Energy of an electromagnetic wave

`\\u=(c)/(\lambda )`

`\\u \propto (1)/(\lambda )`

`E\propto (1)/(\lambda )`

`\\u` = Frequency of the electromagnetic wave

`\lambda` = Wavelength of the electromagnetic wave

Radio waves with longest wavelength has lower radiant energy than the microwaves.Hence, correct option is C.