The quantities of heat required to raise the temeprature of tow solid copper spheres of radii r1 and r2 (r1 = 1.5 r2) throught 1 K in the ratio

Question

The quantities of heat required to raise the temperature of two solid copper spheres of radii r₁ and r₂(r₁ - 1.5 r₂) through 1k are in the ratio :

(1) \(\frac{5}{3}\)

(2) \(\frac{27}{8}\)

(3) \(\frac{9}{4}\)

(4) \(\frac{3}{2}\)

Answer 1

Correct answer is (2) \(\frac{27}{8}\)

Heat supplied ΔQ = M_sΔT

For same meterial 's' same.