Question

The two ends of a metal rod are maintained at temperature `100^(@)C` and `110^(@)C`. The rate of heat flow in the rod is found to be `4.0 J//s`. If the ends are maintained at temperature s `200^(@)C` and `210^(@)C`. The rate of heat flow will be
A. `44.0 J//s`
B. `16.8 J//s`
C. `8.0 J//s`
D. `4.0 J//s`

Answer 1

Correct Answer - D
Rate of flow of heat `prop` temprature difference
`4/Q = 10/10 rArr Q = 4 J//s`.