A scientist says light is matter because it made of particles called photons that contain energy, which is the equivalent of mass, using #E=mc^2#, state the extent to which his belief is justified?
He is wrong
I will be answering my own question, as I realized what I didn't understand
He is wrong as he seems to have misinterpreted the formula
Photons are an example of this as they contain energy and have no mass. So no, light is not matter and the scientist is wrong.