For spontaneous cooling of a hot metal rod (system) in air :
(a) ∆S ₛᵧₛₜₑₘ > 0, ∆S ᵤₙᵢᵥₑᵣₛₑ < 0
(b) ∆S ₛᵧₛₜₑₘ > 0, ∆S ᵤₙᵢᵥₑᵣₛₑ > 0
(c) ∆S ₛᵧₛₜₑₘ < 0, ∆S ᵤₙᵢᵥₑᵣₛₑ > 0
(d) ∆S ₛᵧₛₜₑₘ < 0, ∆S ᵤₙᵢᵥₑᵣₛₑ < 0
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- (d) ∆S ₛᵧₛₜₑₘ < 0, ∆S ᵤₙᵢᵥₑᵣₛₑ < 0
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(d) ∆S ₛᵧₛₜₑₘ < 0, ∆S ᵤₙᵢᵥₑᵣₛₑ < 0
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