Questions

# A crystal has linear coefficient of expansion  $9×{10}^{-5},12×{10}^{-5},7×{10}^{-5}/K$ along three mutually perpendicular directions the volume expansion coefficient is

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a
27×10−5/K
b
26×10−5/K
c
21×10−5/K
d
28×10−5/K
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detailed solution

Correct option is D

coefficient of volume expansion of crystal is γ=αx+αy+αz αx,αy,αz coefficient of linear expansion of crystal along mutually perpendicular directions γ=9×10−5+12×10−5+7×10−5 γ=28×10−5/K

Similar Questions

The coefficient of expansion of a crystal in one direction (x-axis) is 2.0x 10-6 K-1 and that in the other two perpendicular (y-and z-axes) direction is 1.6 x 10-6 K-1 What is the coefficient of cubical expansion of the crystal?

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