Question
Yellow light is used in single slit diffraction experiment with slit width $0.6\, mm.$ If yellow light is replaced by $X-$rays then the pattern will reveal
✓
Answer
(b)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.
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