Here, P = 2 kW = 2 x 103 watt, whereas t = 1 m = 60 seconds and h=10m. (g=9.8m/s2). Now, the amount of the water lifted by the pump is the mass of water(m).
Given the formula P = W /t = mgh / t and applying the given values to calculate,
2 x 103= m x 9. 8 x 10 / 60
m x 9. 8 x 10= 2 x 103 x 60
Hence, m = 2 x 103 x 60 / 9. 8 x 10= 2 x 102 x 60 / 9.8= 12000/ 9.8 =1224.5 kg
Thus, the amount of water lifted by the pump is 1224.5 kg.