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Q. |
There metal walls of same cross-sectional area having thermal conductivity in the ratio 1 : 2 : 4 transfer heat at the rate of 15000 kcal/hr. For same thickness of wall, the temperature deop will be in the ratio |
A. | 1 ; 2 ; 4 |
B. | 1 : |
D. | 4 ; 2 ; 1 |
E. | 1 ; 1 ; 1 |
Answer» B. 1 : |
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