The determination of a value of Nusselt number or the convective film coefficient forms a basis for the computation of heat transfer by convection. Towards that end, following approaches have been suggested(i) Non-dimensional analysis and experimental correlations(ii) Hydrodynamic concept of velocity boundary layer(iii) Reynolds similarity between the mechanism of fluid friction in the boundary layer and the transfer of heat by convectionIdentify the correct one

The determination of a value of Nusselt number or the convective film

1.	The determination of a value of Nusselt number or the convective film coefficient forms a basis for the computation of heat transfer by convection. Towards that end, following approaches have been suggested(i) Non-dimensional analysis and experimental correlations(ii) Hydrodynamic concept of velocity boundary layer(iii) Reynolds similarity between the mechanism of fluid friction in the boundary layer and the transfer of heat by convectionIdentify the correct one
A.	i, ii and iii
B.	i and ii
C.	ii and iii
D.	i and iii
Answer» D. i and iii

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