A wire ring of `3cm` redius is rested on the surface of a liquid and then reaised. The pull required is `3.03 g` more before the film breaks than it is afterwards. Find the surface tension of the liquid.

Surface tension is the property of a liquid by virtue of which free surface of liquid at rest tries to have minimum surface area. In doing so, the free surface of liquid at rest behaves as if it is covered with a stretched membrane. Surface tension (S) of a liquid is measured by from (F) acting on unit length fo a line (l) imagined to be drawn tangentially anywhere on the free surface i.e., S = (F)/(l). S is measured in N m^(-1) Read the above passage and answer the following question : (i)What is the cause of surface tension ? (ii) A wire ring of 30 mm diameter resting flat on the surface of a liquid is raised. The pull required is 1.5 gf more before the film breaks then it is after. What is surface tension of the liquid ? (iii) What are the implication of this phenomenon in day to day life ?

A wire ring of 9/11 cm. radius and negligible weight rests flat on the surface of a liquid and then raised. The pull required is 3 gm wt. before the flim breaks. If g=10m//s^(2) calculate the surface tension of the liquid.

A wire ring of internal radius 3 cm and external radius 3.2 cm is rested on the surface of a liquid and is then raised. An extra pulling force equivalent to the weight of 3.03 g is required before the film breaks than it is after. Calculate the surface tension of the liquid.

A thin wire ring of 3 cm radius float on the surface of liquid. The pull required to raise the ring before the film breaks is 30.14xx10^(3)N more than its weight. The surface tension of the liquid (in Nm^(-1)) is

A thin wire ring of radius of 2m is placed on the surface a liquid. If a force of 4N is required to pull this ring from the surface of liquid (before the liquid film breaks) then the surface tension of liquid is

A circular loop of thin wire of radius 7 cm is lifted from the surface of a liquid . An additional force of 44 xx 10^(-2) N is required to detach the loop from the surface of the liquid . The surface tension of the liquid in N/m is