For a hydrodynamically and thermally fully developed laminar flow through a circular pipe of constant cross-section, the Nusselt number at constant wall heat flux ( Nuq )

Q. For a hydrodynamically and thermally fully developed laminar flow through a circular pipe of constant cross-section, the Nusselt number at constant wall heat flux ( Nuq ) and that at constant wall temperature ( NuT ) are related as

(A) Nuq > NuT                                                                            

(B) Nuq < NuT

(C) Nuq = NuT 

(D) Nu_q = (Nu_T )²

Ans: Nuq > NuT