Q.

Dimensional formula for thermal conductivity is (here K denotes the temperature) :

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a

MLT−2 K−2

b

MLT−3 K−1

c

MLT−2 K

d

MLT−3 K

answer is B.

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Detailed Solution

Rate of heat flow in steady state in the process of conduction is given by dQdt=kAΔTΔx ⇒k=dQdt(Δx)(ΔT)A⇒[k]=( work )( Time )( Temp )( length )= Force ( Time )( Temp )=MLT-2TK =MLT-3K-1

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Dimensional formula for thermal conductivity is (here K denotes the temperature) :