While measuring surface tension of water using capillary rise method the necessary precaution to be taken is//are

While measuring surface tension of water using capillary rise method, height of the lower meniscus from free surface of water is 3cm while inner radius of capillary tube is found to be 0.5cm . Then compute surface tension of water using this data. (Take contact angle between glass and water as 0^(@) and g=9.8lms^(-2) )

While measuring surface temsoion of water using capillary rise method, heihgt of the lowr meniscus from free surface of water is 3 cm while inner radius of capillary tube is found to be 0.5 cm. Then compute tension of water using this data. (Take contact angle between glass and water and a 0 and g=9.81 m//s^(2)

Describe an experiment to determine surface tension of water in the laboratory by capillary rise method. Derive the necessary formula.

The surface tension for pure water in a capillary tube experiment is

In experiment for measuring surface tension by capillary rise method, reading for positions A, B, C and D for internal diameter of capillary tube are given as under Mean internal radius of capillary is

In experiment for measuring surface tension by capillary rise method, reading or positions A , B , C and D for internal diameter of capillary tube are given as under A(cm)=1.006 B(cm)=1.009 C(cm)=1.004 D(cm)=1.009 Mean intenal radius of capillary is

In an experiment to determine the surface tension of water by capillary rise, water rises to a height of 0.03m in a capillary tube of diameter 10^-3 m. If the angle of contact is negligibly small, calculate the surface tension of water.

The following observations were taken for determining surface tension T of water by capillary method: diameter of capillary, D = 1.25 xx 10^(-2) m rise of water h = 1.45 xx10^(-2) m. Using g = 9.80 ,m//s^(2) and the simplified relation T = (rhg)/(2) xx 10^(3) N//m , the possible error in surface tension is closest to: