Human eye can detect Visible light at 400 to 700 nanometer?

Radio waves, X-ray waves, and microwaves are detected to be travelling in a vacuum. If the waves have a wavelength of2 x 10³ m, 2 x 10^-9m, 2 x 10^-1 m respectively, which of the three travels the fastest?

Which electromagnetic waves has the shortest wavelength?

What happens to the frequency and wavelength if the energy of the wave decreases?

Name the EM wave  present in sunlight.

Rank the following from low to high frequency

It is the wave height from resting point to the crest or resting point to the trough.

Which electromagnetic wave has the longest wavelength?