Two Parallel Opposed, Infinite Black Planes Are Maintained at 300°C

question 35

Multiple Choice

Two parallel opposed, infinite black planes are maintained at 300°C and 400°C respectively. If the temperature difference is doubled by increasing the temperature from 400°C to 500°C, the heat exchange rate will increase by a factor of about

• A)2.5
• B)5.5
• C)8.75
• D)6.25
• E)4.5

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