A crystal has a coefficient of expansion 13 -10-7 -0C in one direction and 231 - 10-7 -0C in everydirection at right angles to it- Then the cubical coefficient of expansion is-

The coefficient of apparent expansion of mercury in a glass vessel is $153 \times 10^{-} 6 /^{o} C$ and in a steel vessel is $144 \times 10^{- 6} /^{o} C$ . If a for steel is $12 \times 10^{- 6} /^{o} C$ , then that of glass is

Q. A brass rod is

1

m long at

0^{0} C

, if coefficient of expansion is

1.9 \times 10^{- 5}

K^{- 1}

then length at

30^{0} C

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A crystal has a coefficient of expansion 13×10−7/0C in one direction and 231×10−7/0C in everydirection at right angles to it. Then the cubical coefficient of expansion is?

The correct option is D 475×10−7/0CGiven,α1=13×10−7/0Cα2=α3=231×10−7/0CCubical coefficient of expansion,γ=α1+α2+α3γ=13×10−7+231×10−7+231×10−7γ=475×10−7/0CThe correct option is D.

A crystal has a coefficient of expansion $13 \times 10^{- 7} /^{0} C$ in one direction and $231 \times 10^{- 7} /^{0} C$ in every
direction at right angles to it. Then the cubical coefficient of expansion is?