Answer:

Conversion of Poise:

One Poise is equivalent to:

- A) 360 kg/m-hr
- B) 1 dyne sec/cm square
- C) 1/98.1 kgf sec/m square
- D) 10 to the power minus 1 kg/m-sec

Explanation:

Viscosity is a measure of the resistance of a fluid to deformation under shear stress. The SI unit of viscosity is the Pascal-second (Pa·s). However, other units are also used to express viscosity.

The Poise is a unit of dynamic viscosity and is defined as the viscosity of a fluid in which a force of one dyne per square centimeter maintains a velocity of one centimeter per second between two parallel layers of fluid one centimeter apart. It is named after the French physician and physiologist Jean Louis Marie Poiseuille (1797–1869).

The conversions of Poise are given below:

A) 360 kg/m-hr

This conversion is incorrect. There is no direct conversion factor between Poise and kg/m-hr.

B) 1 dyne sec/cm square

This is the correct conversion of Poise. One Poise is equal to one dyne second per square centimeter. This is because Poise is defined as the dynamic viscosity of a fluid in which a force of one dyne per square centimeter maintains a velocity of one centimeter per second between two parallel layers of fluid one centimeter apart.

C) 1/98.1 kgf sec/m square

This conversion is incorrect. The unit kgf (kilogram-force) is not a standard SI unit of force. The correct unit of force is the Newton (N).

D) 10 to the power minus 1 kg/m-sec

This conversion is incorrect. The correct unit of dynamic viscosity in the SI system is the Pascal-second (Pa·s).

Conclusion:

Therefore, the correct conversion of Poise is 1 dyne sec/cm square.