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Physics · UNITS AND MEASUREMENT
हिन्दीThe dimensional formula of thermal conductivity \( k \) in the heat flow equation \( Q = \frac{k A (T_1 - T_2) t}{d} \) is:
Correct answer · Option 1
\( [\text{M L T}^{-3} \text{K}^{-1}] \)
Explanation
\( [k] = \frac{[Q][d]}{[A][T][t]} = \frac{[\text{M L}^2 \text{T}^{-2}][\text{L}]}{[\text{L}^2][\text{K}][\text{T}]} = [\text{M L T}^{-3} \text{K}^{-1}] \).
