There Metal Walls of Same Cross-Sectional Area Having Thermal Conductivity

question 46

Multiple Choice

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 :
• C)4 ; 2 ; 1
• D)1 ; 1 ; 1

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