Yellow light is used in single slit diffraction experiment with slit width `0.6mm`. If yellow light is replaced by X-rays then the pattern will reveal

Options

A. more number of fringes
B. less number of fringes
C. no diffraction pattern
D. a very narrow central maxima

Answer

C

Explanation

No diffraction pattern, because for a clear diffraction pattern, the slit width should be comparable with `lamda`. For X-rays `lamda` is about 1 Å, while for yellow light `lamda` is about 6000 Å.