Q.

The unit of thermal conductivity is

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a

Wm-1 K-1

b

JmK-1

c

Jm-1 K-1

d

WmK-1

answer is A.

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Detailed Solution

K=QxAT1-T2twhere Q  is the amount of heat flow, x is the thickness of the slab, A is the area of cross-section, and t is the time taken.K=Jmm2 K s=W1 m1 K=Wm-1 K-1
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