14 When water is filled carefully in a glass one can fill it

Last updated: 6/9/2023

14 When water is filled carefully in a glass one can fill it to a height h above the rim of the glass due to the surface tension of water To calculate h just before water starts flowing model the shape of the water above the rim as a disc of thickness h having semicircular edges as shown schematically in the figure When the pressure of water at the bottom of this disc exceeds what can be withstood due to the surface tension the water surface breaks near the rim and water starts flowing from there If the density of water its surface tension and the acceleration due to gravity are 10 kg m 0 07 Nm and 10 ms 2 respectively the value of h in mm is 14 ALLEN CAREER INSTIT COVEGAMENTO Ans 3 74 Sol h 2 r h 2 Pressure at the bottom of disc pressure due to surface tension pgh T 1 1 R R JEE Advanced 2020 Paper 1 Held on Sunday 27 September 2020 R R 1 1 So R R Pgh TR R2 T 04 2 and R h 2 JEE Advanced 2020 Paper 1 NAT