7. For laminar fully developed constant property flow in a pipe at uniform heat flux the Nusselt number is
A. 4.364
B. 0.7
C. 2
D. 3.656
7. For laminar fully developed constant property flow in a pipe at uniform heat flux the Nusselt number is
A. 4.364
B. 0.7
C. 2
D. 3.656