BE Civil Engineering Semester 1 (FE First Year)University of Mumbai
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# Draw the following : (1,-1,3) ,(2,0,0) , [0,0,-1]An electron is accelerated through 1200 volts and is reflected from a crystal. The second order reflection occurs when glancing angle is 60°. - BE Civil Engineering Semester 1 (FE First Year) - Applied Physics 1

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ConceptIntroduction to Crystallography

#### Question

Draw the following : (1,-1,3) ,(2,0,0) , [0,0,-1]
An electron is accelerated through 1200 volts and is reflected from a crystal. The second order reflection occurs when glancing angle is 60°. Calculate the inter planar spacing of the crystal.

#### Solution

Ans :- 1. Miller indices  :( 1 1 3)
Intercepts   :a, -a, a/3

2. Miller indices : (200) …………(can also be written as (100))
Reciprocals : 1, ∞ ,∞
Intercepts : a, ∞ ,∞

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#### APPEARS IN

Solution Draw the following : (1,-1,3) ,(2,0,0) , [0,0,-1]An electron is accelerated through 1200 volts and is reflected from a crystal. The second order reflection occurs when glancing angle is 60°. Concept: Introduction to Crystallography.
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