Previous Year NEET Question- Thermodynamics L-6

Question: The quantities of heat required to raise the temperature of two solid copper spheres of radii $r_1$ and $r_2\left(r_1=1.5 r_2\right)$ through $1 \mathrm{~K}$ are in the ratio :#

A) $\frac{9}{4}$

B) $\frac{3}{2}$

C) $\frac{5}{3}$

D) $\frac{27}{8}$

Answer: $\frac{27}{8}$#