मरकरी बैरोमीटर (पारा वायुदाबमापी) का विकास किसने किया था, जो वायुमंडलीय दबाव के सटीक मापन की अनुमति देता है?

Reena takes a plastic bottle and makes three identical holes at different vertical heights (top, middle, and bottom). She fills the bottle with water. Which statement correctly describes her observation and inference?

Which of the following statements is/are true about the pressure exerted by fluids? (i) Fluids exert pressure on the base and walls of the container in which they are enclosed. (ii) Pressure exerted in any confined mass of fluid is transmitted unequally in all directions.