I have one question that can we destroy the mass does any one have answer?
Mass cannot be destroyed.
We had this conversation recently (https://www.physicsforums.com/threads/can-a-massless-photon-create-mass.787079/). In the end it boils down to what you mean by "mass". If you mean the invariant mass (as in the square of the total 4-momentum) then it cannot be destroyed. If you mean the sum of the rest masses of all constituents of a system, then yes it can.