One end of a conducting rod is maintained at 5 0 ∘ C and the other end is at ice melting at 0 ∘ C. The rate of melting of ice is doubled if:

The melting rate ∝ L K A Δ T . (A) gives 4 × 2 = 8 times; (B) gives 4 2 = 2 1 ; (C) gives 2 2 1 = 4 1 ; (D) gives 2 2 × 2 = 2 times. D.

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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferMedium2 min

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One end of a conducting rod is maintained at $5 0^{\circ}$ C and the other end is at ice melting at $0^{\circ}$ C. The rate of melting of ice is doubled if:

Options:

Answer:

Solution:

The melting rate $\propto \frac{K A Δ T}{L}$ . (A) gives $4 \times 2 = 8$ times; (B) gives $\frac{2}{4} = \frac{1}{2}$ ; (C) gives $\frac{\frac{1}{2}}{2} = \frac{1}{4}$ ; (D) gives $\frac{2 \times 2}{2} = 2$ times. D.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

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