For small temperature difference, the heat transfer rate as per Newton's law of cooling is proportional to (where, Δt = excess temperature)

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Q. For small temperature difference, the heat transfer rate as per Newton's law of cooling is proportional to (where, Δt = excess temperature)

(A) Δt
(B) Δt2
(C) Δt3
(D) √(Δt)

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✅ Correct Answer: (A) Δt

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