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One end of a 0.25 m long metal bar is in...

One end of a `0.25 m` long metal bar is in steam and the other is in contact with ice. If 2g of ice melts per minute, then the thermal conductivity of the metal is (Given cross section of the bar `= 5 xx 10^(-4)m^(2)` and latent heat of ice is `80 cal g^(-1)`).

A

80 cal/s-m-`""^(@)C`

B

90 cal/s-m-`""^(@)C`

C

70 cal /s-m-`""^(@)C`

D

60 cal/s-m-`""^(@)C`

Text Solution

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The correct Answer is:
A
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