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Two identical rods of copper and iron ar...

Two identical rods of copper and iron are coated with wax uniformly. When one end of each is kept at temperature of boiling water, the length upto which wax melts are 8.4cm and 4.2cm respectively. If thermal conductivity of copper is 0.92, then thermal conductivity of iron is

A

0.23

B

0.46

C

0.115

D

0.69

Text Solution

Verified by Experts

The correct Answer is:
B
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