AIIMS 2001 Physics Heat Transfer MCQ Question
1 Kcal of heat flowing through a rod of iron. When the rod is cut down to 4 pieces then what will be the heat flowing through each piece having same differential temperature?
1/2 Kcal
1/4 Kcal
1 Kcal
1/15 Kcal
Correct Answer
Detailed Explanation
When the rod of iron is cut into 4 equal pieces, each piece will still experience the same differential temperature as the entire rod. The total heat transfer of 1 Kcal is not divided among the pieces; rather, each piece will still allow the same amount of heat to flow through it due to the properties of conduction. Therefore, the heat flowing through each piece remains 1 Kcal. The other options (1/2 Kcal, 1/4 Kcal, and 1/15 Kcal) suggest that the heat is divided among the pieces, which is incorrect in this context. Hence, the correct answer is C) 1 Kcal.
Found an issue with this question?
Related Questions
More from Thermal Properties of Matter
A bimetallic strip is made of aluminium and steel (αAl > αsteel). On heating, the strip will
A brass wire 1.8 m long at 27°C is held taut with negligible tension between two rigid supports. Diameter of the wire is 2 mm, its coefficient of line...
Which of the following graph is best explanation of cooling of hot water with time?