JEE Main 2010Annual, Paper 1PhysicsEasyDual Nature of Matter and Radiation146× since 2002If a source of power 4kW4kW4kW produces 1020{10^{20}}1020 photons/second, the radiation belongs to a part of the spectrum calledAOption A. XXX -raysBOption B. ultraviolet raysCOption C. microwavesDOption D. γ\gammaγ - raysCheckSkip · show solution