Hard X-rays for the study of fractures in bones should have a minimum wavelength of 10⁻¹¹ ~m . The accelerating voltage for electrons in X-ray machine should be

Step-by-step solution

aligned & : _ = h c e V = 1.242 10⁻⁶ V & V= 1.242 10⁻⁶ 10⁻¹¹ =124.2 kV aligned The accelerating voltage for electrons in X-ray machine should be greater than 124.2 kV .