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The heat is flowing through a rod of len...

The heat is flowing through a rod of length 50 cm and area of cross-section `5cm^(2)` . Its ends are respectively at `25^(@)C` and `125^(@)C` . The coefficient of thermal conductivity of the material of the rod is `0.092 kcal // m × s ×.^(@) C` . The temperature gradient in the rod is

A

`2^@C//cm`

B

`2^@C//m`

C

`20^@C//cm`

D

`20^@C//m`

Text Solution

Verified by Experts

The correct Answer is:
A
Temperature gradient in the rod –
`(dT)/(dx)=((125-25)^@C)/(50" cm")=2^@C//cm`
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