Question:medium

Vacancy diffusion coefficient: $D = D_0 \exp(-Q/RT)$

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Arguments of transcendental functions (like $\exp$, $\ln$, $\sin$, $\cos$) must always be dimensionless.
This rule is extremely helpful for verifying physical formulas quickly.
Updated On: Jul 7, 2026
  • Dimensionally correct
  • Requires $D_0/L$ to be correct
  • Requires Q dimensionless
  • All formulas fail dimensionally
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The Correct Option is A

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