There are two concentric metallic shells of negligible thickness of radii 5 cm and 20 cm. The region between the two shells is filled with a medium of thermal conductivity k. The temperature of inner and outer sphere is maintained at 5^(@)C and 10^(@)C respectively. If the heat current flowing from inner to outer sphere is 100 W, find the value of k.

There are two concentric metallic shells of negligible thickness of ra

1.	There are two concentric metallic shells of negligible thickness of radii 5 cm and 20 cm. The region between the two shells is filled with a medium of thermal conductivity k. The temperature of inner and outer sphere is maintained at 5^(@)C and 10^(@)C respectively. If the heat current flowing from inner to outer sphere is 100 W, find the value of k.
Answer» ANSWER :`[3W//m^(@)C]`

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