what is an example of fundamental quantity between viscosity,tension,force,weight or non of the above
An example of a fundamental quantity among the options you mentioned (viscosity, tension, force, and weight) is force.
To explain why force is a fundamental quantity, let's start with the concept of fundamental quantities. In physics, fundamental quantities are those that cannot be defined in terms of other quantities. They are considered as the base units of measurement from which other physical quantities can be derived.
Force is one of the fundamental quantities in physics. It is defined as an external influence acting on an object that can cause it to accelerate or deform. Force is typically represented by the symbol F and is measured in units of Newtons (N) in the International System of Units (SI).
In contrast, viscosity and tension are not fundamental quantities but rather derived quantities. Viscosity is a measure of a fluid's resistance to flow, and it is derived from the fundamental quantities of mass, length, and time. Tension, on the other hand, is the force transmitted through a string, cable, or any other flexible connector, and it is also derived from the fundamental quantity of force.
Weight, although commonly used, is not a fundamental quantity either. It is essentially the force exerted on an object due to gravity. Weight is derived from the fundamental quantities of mass and acceleration due to gravity.
So, among the options you mentioned, force is the only example of a fundamental quantity.