Question

A nozzle is said to be a divergent nozzle
A. when the cross-section of the nozzle increases continuously from entrance to exit
B. when the cross-section of the nozzle decreases continuously from entrance to exit
C. when the cross-section of the nozzle first decreases from entrance to throat and then increases from its throat to exit
D. none of the above

Answer 1

when the cross-section of the nozzle first decrease from entrance to throat and then increase from its throat to exit

Answer 2

when the cross-section of the nozzle decreases continuously from entrance to exit