Question

Which of the following electromagnetic waves has the shortest wavelength?

A.
visible light waves

B.
ultraviolet waves

C.
microwaves

D.
infrared waves

Answer 1

wavelength
visible light 400 to 800 nanometer
uv 400nm and less
microwaves are kind of radiowaves, longer than light: millimeters
infrared 800nm and longer


so the answer, which has the shortest waves, answer B, uv

Answer 2

since the product of the frequency with the wavelength is constant:
\[\lambda \nu = c\]
then the shortest wavelength is associated to the highest frequency