GATE MT 2015 Q59. The driving force for sintering a compact consisting of spherical particles of radius R1 is ΔG1. If the particle size is reduced to R2=0.1 R1, the corresponding driving force ΔG2=αG1, where α is _____.
GATE MT 2015 Q59. The driving force for sintering a compact consisting of spherical particles of radius R1 is ΔG1. If the particle size is reduced to R2=0.1 R1, the corresponding driving force ΔG2=αG1, where α is _____.
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Correct answer is 10. We know that driving force is inversely proportional to radius. ΔG∝ 1/R ⇒ ΔG1R 2= ΔG2R 1 As per question, α=ΔG2/ΔG1 = R 1/R 2 = R 1/0.1 R 2 = 10
Correct answer is 10.
We know that driving force is inversely proportional to radius.
ΔG∝ 1/R ⇒ ΔG1R 2= ΔG2R 1
As per question, α=ΔG2/ΔG1 = R 1/R 2 = R 1/0.1 R 2 = 10
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