Amount of energy required to emit an electron from the metal surface is called Mass-Energy relation given by Einstein is represented as: Earth is not an inertial frame of reference. An object can not be accelerated to the speed of light in free space. An accelerated frame is a ___________ frame of reference Plank explained the black body in terms of quantum concept of electromagnetic radiation. If alpha particle, electron, proton and neutron, all having same energy which one will have the shortest wavelength:
