Question: 8 . A fin of rectangular cross - section with a thickness of 5 mm , a height of 5 0 mm , and a

8. A fin of rectangular cross-section with a thickness of 5 mm, a height of 50 mm, and a length of 100 mm is attached to a base with a thermal conductivity of 100 W/mK. The base temperature is 100\deg C, and the air temperature is 20\deg C. Determine the heat transfer rate from the fin and the fin efficiency.

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