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One end of conducting rod is maintained ...

One end of conducting rod is maintained at temperature `50^(@)C` and at the other end ice is melting at `0^(@)C`. The rate of melting of ice is doubled if:

A

The temperature is made `200^(@)C` and the area of cross-section of the rod is doubled

B

The temperature is made `100^(@)C` and length of the rod is made of four times

C

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

D

The temperature is made `100^(@)C` and area of cross-section of rod and length both are doubled

Text Solution

Verified by Experts

The correct Answer is:
D
In steady state of a rod the rate of heat conduction is given as `kA(DeltaT//I)` so to double the rate option (D) iscorrect.
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