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AIIMS2001Physics-Thermal Properties of Matter

AIIMS 2001 Physics Heat Transfer MCQ Question

Type: MCQ-conceptual-Easy-Class 11

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?

A

1/2 Kcal

B

1/4 Kcal

C

1 Kcal

D

1/15 Kcal

Correct Answer

Option C

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.

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