# 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

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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) $\frac{3}{2}$

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Correct answer is (2) $\frac{27}{8}$

Heat supplied ΔQ = MsΔT

For same meterial 's' same.

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