A steam chamber is connected to an ice block at 00C, by means of two two identical rod in series . It is observed that 100 gm of ice is melted in 10 minutes. If they are connected in parallel amount ice melt in 5 minutes in gm is_

heat flow is inversely proportional to  resistance and directly proportional to time in the first case resistance is 2R and time is 10 min in the second case resistance is R2 and time is 5 min m∞Q∞tR                            m1m2=t1t2R2R1 100m2=105R22R=12 m2=200