Questions
The coefficient of linear expansion of nickel is . Find its coefficients of areal and cubical expansion?
a
26×10−6 ∘C-1,39×10−6 ∘C-1
b
2.6×10−7 ∘C-1,3.9×10−7 ∘C-1
c
6×10−6 ∘C-1,9×10−6 ∘C-1
d
2×10−6 ∘C-1:3×10−6 ∘C-1
detailed solution
Correct option is A
coefficient of linear expansion of nickel is α=13×10-6oC-1 to find coefficient of areal expansion of nickel β=?coefficient of cubical expansion of nickel γ=? β=2α ; γ=3α substitute α value in above formlas β=2×13×10-6=26×10-6oC-1 γ=3×13×10-6=39×10-6oC-1Talk to our academic expert!
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If the volume of a block of metal changes by 0.12%. when it is heated through 20°C, then the coefficient of linear expansion is
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