A tank 2 m high is half filled with water and then filled to the top with oil of density 0.80 g/cc. What is the pressure at the bottom of the tank due to these liquids (Take g = 10 m s-2)?
A1.8 × 103 N m-2
B0.9 × 103 N m-2
C1.8 × 104 N m-2
D0.9 × 104 N m-2.
why is the answer "c"
Ans 8:
Class : Class 10
Density of oil = 0.80 g/cc = 800 kg/m3Density of water = 1 g/cc = 1000 kg/m3Pressure of water = Height will be 1 m half filledâ¹ hdg = 1mÃ1000kg/m3Ã10m/s2 = 10000 PaPressure by oil = hdg = 1 x 800 x 10 = 8000 PaTotal pressure = 8000Pa 10000Pa = 18000Pa = 1.8Ã104N/m2