GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Density
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Viscosity
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Surface tension
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Pressure
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Detailed explanation-1: -It describes the internal friction of a moving fluid. A fluidwith large viscosity resists motion because its molecular makeup gives it a lot of internal friction.
Detailed explanation-2: -Viscosity is defined as the resistance to flow! At a molecular level, viscosity is a result the interaction between the different molecules in a fluid. This can be also understood as friction between the molecules in the fluid.
Detailed explanation-3: -Its unit of measurement is dynes per square centimeter (dynes/cm2). The fundamental unit of viscosity measurement is the poise. A material requiring a shear stress of one dyne per square centimeter to produce a shear rate of one reciprocal second has a viscosity of one poise, or 100 centipoise.
Detailed explanation-4: -The viscosity of a fluid is a measure of its resistance to deformation at a given rate. For liquids, it corresponds to the informal concept of “thickness": for example, syrup has a higher viscosity than water.
Detailed explanation-5: -One way is to measure a fluid’s resistance to flow when an external force is applied. This is dynamic viscosity.