The spacing between reflecting planes in a crystal is 2.82 10-10 m. A beam of X-rays is strongly reflected at an angle of 160 with the crystal face. What is the wavelength of the X-rays?
Question 2
A diffraction grating with 4 000 lines/cm is illuminated by light from the sun. The solar spectrum is spread out on a white wall across the room. At what angle from the center line does blue light (400 nm) appear? At what angle from the center line does red light (650 nm) appear?