A thin, flat & square plate measuring 2 m 2 m is freely hanging in ambient air at 25C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2. The plate temperature will remain constant at 30C, if the convective heat transfer co-efficient is ________________ W/m2 C ?

A. 200

B. 100

C. 150

D. 50

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