The mach number of the flow corresponding to the maximum entropy will be

Question

 Air at 2 bar 60⁰C enters a constant area pipe of 60 mm diameter with a velocity of 04 m/s. during the flow through the pipe, heat is added to the air stream. Fritctional effects are negligible and the values of C_p and C_v are that of standard air. The mach number of the flow corresponding to the maximum entropy will be    

(a) 0.845                      (b)1                 

(c)0.1212                     (d)!.183