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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 rod is made four times

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
D
`(dQ)/(dt) = (dmL)/(dt) = (kA Delta T)/(L)`
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