Electromagnetic waves can be ordered by wavelength.
Which option shows the waves in order of increasing wavelength?
Short wavelength⟶Long wavelength \text{Short wavelength} \longrightarrow \text{Long wavelength} Short wavelength⟶Long wavelengthRadio waves, Infra-red, X-rays
X-rays, Infra-red, Radio waves
X-rays, Radio waves, Infra-red
Infra-red, X-rays, Radio waves