Two identical metallic spheres

PHYSICS · Subjective · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

Two identical metallic spheres, each initially at 100 °C, are left to cool in a laboratory kept at 25 °C. After 15 minutes the first sphere has cooled to 60 °C, while the second has cooled to 50 °C. Calculate the ratio of the cooling constant of the second sphere to that of the first, correct to two decimal places.

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