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 :
Answer & explanation
Correct answer: option 3
\(\Delta \)Q = m c \(\Delta\)T
m = \(\frac{4 \pi r^3}{3} \rho\) c \(\Delta\)T
\(\frac{\Delta Q_1}{\Delta_2}\) = [\(\frac{r_1}{r_2}\)]3 = \(\frac{27}{8}\)