Question
One end of a copper rod of length 1.0 m and area of cross-section 10−3 is immersed in boiling water and the other end in ice. If the coefficient of thermal conductivity of copper is 92cal/m−s−∘C and the latent heat of ice is 8×104cal/kg, then the amount of ice which will melt in one minute is
Answer: Option C
:
C
Heat transferred in one minute is utilised in melting the ice so, KA(θ1−θ2)tl=m×L
⇒m=10−3×92×(100−0)×601×8×104=6.9×10−3kg
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:
C
Heat transferred in one minute is utilised in melting the ice so, KA(θ1−θ2)tl=m×L
⇒m=10−3×92×(100−0)×601×8×104=6.9×10−3kg
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