Heat Transfer Questions

Q.  In free con-vection heat transfer, Nusselt number is function of________________?

a. Grashoff no. and Reynold no
b. Grashoff no and Prandtl no.
c. Prandtl no. and Reynold no
d. Grashoff no., Prandtl no and Reynold no
e. none of the above


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