The two ends of a metal rod are maintained at temperatures 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 now maintained at temperatures 200^(@)C and 210^(@)C, the rate of flow of heat will be

The two ends of a metal rod are maintained at temperatures 100^(@)C an

1.	The two ends of a metal rod are maintained at temperatures 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 now maintained at temperatures 200^(@)C and 210^(@)C, the rate of flow of heat will be
Answer» <html><body><p>16.8 j/s<br/>8.0 J/s<br/>4.0 J/s<br/>44.8 J/s<br/></p>Solution :As we know `(d <a href="https://interviewquestions.tuteehub.com/tag/theta-1412757" style="font-weight:bold;" target="_blank" title="Click to know more about THETA">THETA</a>)/(<a href="https://interviewquestions.tuteehub.com/tag/dt-960413" style="font-weight:bold;" target="_blank" title="Click to know more about DT">DT</a>) prop (T_(2)-T_(1)) or (d theta)/(dt) = <a href="https://interviewquestions.tuteehub.com/tag/k-527196" style="font-weight:bold;" target="_blank" title="Click to know more about K">K</a> (T_(2)-T_(1))` <br/> Case `(i) (d theta_(1))/(dt )= k(110-100) = kxx10 --- (i)` <br/> Case (ii) `(d theta_(2))/(dt)= k(210-200) = kxx10 --- (ii) ` <br/> From (i) & (ii) `(d theta_(1))/(dt) = (d theta_(2))/(dt) = 4.0 ` j/s</body></html>