X-rays of wavelength 1 A are scattered at such an angle that the recoil electron has the maximum kinetic energy. Calculate the wavelength of the scattered ray? A beam of y-radiation having photon energy of 510 Kev is incident on a foil of aluminium. Calculate the wavelength of the radiation of 90 and the energy of corresponding electron? A radio transmitter operates at a frequency of 880 kHz and a power of 10 kW. How many photons per second does it emit