Which type of electromagnetic wave is invisible, but close to visible light, with wavelengths about the size of a virus or a large molecule (1 raise × 10-8 to 4 × 10-7 meters)?

A. gamma rays

B. ultraviolet rays

C. microwaves

D. radio waves

E. infrared rays

Question

Which type of electromagnetic wave is invisible, but close to visible light, with wavelengths about the size of a virus or a large molecule (1 raise × 10-8 to 4 × 10-7 meters)?


A. gamma rays



B. ultraviolet rays 



C. microwaves



D. radio waves



E. infrared rays

theeric · Answer

I looked at this link: http://en.wikipedia.org/wiki/File:Electromagnetic-Spectrum.svg

theeric · Answer

$1\times10^{-8}\ [m]$ is $10\ [nm]$.

theeric · Answer

$4\times 10^{-7}\ [m]$ is $400\ [nm]$.

theeric · Answer

Look at the wavelength numbers on the right of the picture's scale.

anonymous · Answer

right a virus ranges from size 20 to 400nm

theeric · Answer

Can you get to that link?

anonymous · Answer

and i know microwaves are radio waves

anonymous · Answer

as one of my options ultraviolet seems fit

anonymous · Answer

or am i missing something

theeric · Answer

Actually, that picture shows a distinction between microwaves and radio waves. It shows that microwaves have a smaller wavelength. http://upload.wikimedia.org/wikipedia/commons/thumb/2/25/Electromagnetic-Spectrum.svg/395px-Electromagnetic-Spectrum.svg.png I'd agree with ultraviolet! Congrats!

anonymous · Answer

haha i was just about to ask that! thanks for the confirmation

theeric · Answer

Not a problem!$$\huge\color{blue}{\ddot\smile}$$