In comparing the wavelengths of two monochromatic x-ray lines, it is noted that line A gives a first-order reflection maximum at a glancing angle of 24° to the smooth face of a crystal. Line B, known to have a wavelength of 96 pm, gives a third-order reflection maximum at an angle of 60° from the same face of the same crystal. (a) Calculate the interplanar spacing. (b) Find the wavelength of line A.
