A 120 kg metal cylinder 2.5 m long and with each end of area 40 cm2 stands vertically on one end. The pressure exerted by the cylinder on the floor will be: (Take g = 10 m/s2)

A submarine is designed to withstand a maximum absolute pressure of 100 atm. How deep can it go below the surface of water? (Take density of water = 1000 kg/m3, 1 atm = 1 × 105 Pa, atmospheric pressure = 1 atm, and g = 10 m/s2)

The meniscus of mercury in a glass capillary tube is: