JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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Application +4 | -1

In two same dimensional vessels same amount and same temperature ice is filled. If in both vessels complete ice is melt in 20

\mathrm{min}

and

50 \mathrm{~min}

then find out the ratio of thermal conductivity of both vessels.

View answer and explanation

Correct option: C

R=\frac{L}{K A}

The correct answer is C (

R=\frac{L}{K A}

) because the ratio of thermal conductivities is inversely proportional to the time taken for the ice to melt, and the thermal resistance is given by

R = L/KA

. The ratio of K1/K2 is 5/2.

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