JEE Main 2020 Physics question
A beam of electrons of energy E scatters from a target having atomic spacing of 1Å. The first maximum intensity occurs at = 60°. Then E (in eV) is . (Planck constant h = Js, 1eV = J, electron mass m = kg)
Answer: 50
A beam of electrons of energy E scatters from a target having atomic spacing of 1Å. The first maximum intensity occurs at = 60°. Then E (in eV) is . (Planck constant h = Js, 1eV = J, electron mass m = kg)