This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
The first point to make is that while photons (little packets of light energy) do not have mass, theydo have momentum, and a change in momentum yields a force, so in actual fact light is able to physically interact with matter.

light is not considered as mass because mass is defined as the measure or amount of matter present in an object, light is an example of energy