Two metal rods 1 and 2 of same lengths have same
temperature difference between their ends. Their thermal
conductivities are K₁ and K₂ and cross sectional areas A₁
and A₂, respectively. If the rate of heat conduction in rod 1
is four times that in rod 2, then [NEET Kar. 2013]
(a) K₁A₁ = K₂A₂ (b) K₁A₁ = 4K₂A₂
(c) K₁A₁ = 2K₂A₂ (d) 4K₁A₁ = K₂A₂
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Answer:
sorry i don't know.........
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the correct option is b
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