Question

Question No. 6
Which of the Following statement is
CORRECT regarding Debye and Scherer
Formula.
Answer
A. It is a Precise method for identifying
size of nanomaterials.
B. It is a Crude method for identifying size
of nanomaterials.
C. It is a Statistical method for identifying
size of nanomaterials.
D. It is a Comparative method for
identifying size of nanomaterials.​

Answer 1

Answer:

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Explanation:

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Answer 2

The correct answer is (c) It is a Statistical method for identifying  size of nanomaterials.

The Scherrer equation, in X-beam diffraction and crystallography, is a recipe that relates the size of sub-micrometer crystallites in a strong to the widening of a top in a diffraction design.

• It is frequently alluded to, inaccurately, as a recipe for molecule size estimation or examination. It is named after Paul Scherrer.
• It is utilized in the assurance of size of gems as powder.

• Debye Scherrer equation for calculating the crystallite size is given by :

D = kλ/βcosθ

where K is the Scherrer constant,

λ is the wavelength of light used for the diffraction,

β the “full width at half maximum” of  the sharp peaks, and

θ the angle measured.

• The Scherrer constant (K) in the above formula accounts for the shape of the particle and is generally taken to have the value 0.9.