Answer
Non-monochromatic
Work Step by Step
Monochromatic means light that has the single wavelength .
$E=hc/$$\lambda$
Where $E$ is the energy , $h$ is Planck's constant , $c$ is the speed of light and $\lambda$ is the wavelength .
If energy is not same or different then $\lambda$ is different because $hc$ is constant . And if the wavelength$($$\lambda$$)$ is different then it is non-monochromatic source.
