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two spherical containersof different materials one with double the radius and one fourthwall thickness of the tother are filled with ice.if the time taken for complete melting ice in the larger containeris 25 min and for smaller one is 16min the ratio of thermal conductivities of larger to smaller is

two spherical containersof different materials one with double the radius and one fourthwall thickness of the tother are filled with ice.if the time taken for complete melting ice in the larger containeris 25 min and for smaller one is 16min the ratio of thermal conductivities of larger to smaller is

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1 Answers

Abhishek Kumar
askIITians Faculty 253 Points
6 years ago
Calculate the volume of water in the two container.Now, calculate the mass by multiplying with the density of ice.
Heat needed to melt them = mL (Separate for each, because m is different)
Equate this with HEat transfer across the surface = kA(Temperature difference)time
Find the ratio of K.

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