NEET2020Physics-Thermodynamics
NEET 2020 Physics Heat Transfer MCQ Question
Type: MCQ-numerical-Medium-Class 11
The quantities of heat required to raise the temperature of two solid copper spheres of radii r₁ and r₂ (r₁ = 1.5 r₂) through 1 K are in the ratio:
A
3/2
B
5/3
C
27/8
D
9/4
Correct Answer
Option C
Detailed Explanation
Heat required is proportional to volume, which is proportional to r³. Thus, (r₁/r₂)³ = (1.5)³ = 27/8.
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