Question

Which of the following is the correct sequence of wavelengths for electromagnetic radiation in the electromagnetic spectrum?

• A. Radio waves < Micro waves < Visible < UV rays
• B. UV rays > Visible > Radio waves > Micro waves
• C. Radio waves > Micro waves > Visible > UV rays
• D. Radio waves < Micro waves < Visible < UV rays

Answer 1

The correct option is C Radio waves > Micro waves > Visible > UV rays

Range of radio waves wavelength: > 1 mm
Range of Micro waves: 1 mm to 25 $\mu$m
Range of Visible rays: 750 nm - 400 nm
Range of Ultraviolet rays: 400 nm -100 nm
So, the correct sequence of wavelength in decreasing order is: Radio waves > Micro waves > Visible > UV rays