A) no diffraction pattern
B) that the central maxima narrower
C) less number of fringes
D) more number of fringes
Correct Answer: A
Solution :
To see the diffraction pattern, wavelength of radiation must be of the order of the dimensions of the slit. But here slit width 0.6 mm is very much large in comparison to wavelength of X-ray ( \[\lambda =1\overset{\text{o}}{\mathop{\text{A}}}\,\]or \[{{10}^{-7}}\] mm). Therefore no diffraction pattern is observed.
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