In this question, a statement of assertion 
is followed by a statement of reason 
. Mark the correct choice as:
Assertion: Standard optical diffraction gratings cannot be used for discriminating between different X-ray wavelengths.
Reason: The grating spacing is not of the order of X-ray wavelengths.
Text Solution
Verified by ExpertsThe correct answer is:
A
Wavelength of X-rays is of the order of 
to 
. The grating spacing is not of this order. Hence, it is not suitable for X-ray wavelength.
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