3 Consider a vertical plate of dimension 0.25 m x 0.50 mthat is at 7, = 100"C in a quiescent environment at T_=20°C. In the interest of minimizing heat transfer fromthe plate, which orientation, (A) or (B), is preferred?Estimate the rate of heat transfer by free convectionfrom the front surface of the plate when it is in the pre-ferred orientation.

Fig: 1

Fig: 2