[IIT-JEE (Screening) 1999; MP PMT 2002; KCET 2003]
No diffraction pattern
Diffraction is obtained when the slit width is of the order of wavelength of EM waves (or light). Here wavelength of X-rays (1-100 Å) is very-very lesser than slit width (0.6 mm). Therefore no diffraction pattern will be observed.