Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion: Crystalline solids can cause \[x-\]rays to diffract. Reason: Interatomic distance in crystalline solids is of the order of 0.1 nm.A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true but reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false.
Correct Answer: C
Solution :
X-ray crystallography is technique in which the pattern produced by the diffraction of X-rays through the closed spaced lattice of atoms in a crystal is recorded and then analyzed to reveal the nature of that lattice. The spacing in the crystal lattice can be determined using Braggs law. The regular spacing of the atoms in crystal is of the order of wavelength of X-rays (0.1 nm) because of which X-rays are diffracted from the crystals.
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