*/*_The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by?

*/*_The efficiency of jet propulsion for a ship with inlet orifices at

1.	/_The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by?
A.	[2(Vr - v) v]/ Vr¬¨‚â§
B.	[2(Vr + v) v]/ Vr¬¨‚â§
C.	[(Vr - v) v]/ Vr
D.	[(Vr + v) v]/ Vr
Answer» B. [2(Vr + v) v]/ Vr¬¨‚â§