One end of a conducting rod is maintained at temperature 50ºC and at the other end, ice is melting at 0ºC. The rate of melting of ice is doubled if :

Engineering

Physics

Conduction of Heat

Question

Area of cross-section of rod is halved and length is doubled.

The temperature is made 200ºC and the area of cross-section of the rod is doubled.

The temperature is made 100ºC and length of rod is made four times.

The temperature is made 100ºC and the area of cross-section of rod and length both are doubled.

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$\frac{dQ}{dt} = \frac{dmL}{dt} = \frac{kAΔT}{L}$