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Byju's Answer
Standard XII
Physics
Young's Modulus of Elasticity
Calculate the...
Question
Calculate the longest wavelength that can be analysed by a rock salt crystal of spacing
d
=
2.82
˚
A
in the first order.
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Solution
2
d
s
i
n
θ
=
n
λ
For max wavelength
s
i
n
θ
=
1
λ
m
a
x
=
2
d
n
=
2
×
2.82
×
10
−
10
1
λ
m
a
x
=
5.64
˚
A
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