X-rays from copper ( Kalpha1.54 A, Kbeta 1.39 A, Kabs 1.38A) are passed through a sheet of nickel (Kalpha 1.66A, Kbeta 1.50 A, Kabs 1.49A) what intense wavelengths emerge?the answer is 1.54 Ahow? I have no idea where to even start on this problem. Can someone please set up and explain this problem to me?
