JEE Mains Model Paper 13

A spray gun is shown in the figure where a piston pushes air out of a nozzle. A thin tube ofuniform cross section is connected to the nozzle. The other end of the tube in a small liquidcontainer. As the piston pushes air through the nozzle. The liquid from the container rises intothe nozzle and is sprayed out. For the spray gun shown, the radii of the piston and the nozzleare 20mm, and 1mm respectively. The upper end of the container is open to the atmosphere.If the piston is pushed at a speed of 5 mms−1 the air comes out of the nozzle with a speed of