A tube of length \( L \) is shown in the figure. The radius of cross section at the point \( (1) \) is \( 2 \, \text{cm} \) and at the point \( (2) \) is \( 1 \, \text{cm} \), respectively. If the velocity of water entering at point \( (1) \) is \( 2 \, \text{m/s} \), then velocity of water leaving the point \( (2) \) will be:
