Question

One poise is equivalent to:
A. $$0.001$$ pascal second
B. $$0.0001$$ pascal second
C. $$0.01$$ pascal second
D. $$0.1$$ pascal second

Answer 1

Hint: The unit of the dynamic viscosity is known as poise which is generally expressed in a centimeter-gram-second system of units. The force needed to maintain a unit is being expressed by the poise. With the metric prefix centi- the poise is being often used. In the SI unit a centipoise is one millipascal-second.

Complete step by step solution:
Let's discuss the option given.

OPTION A.
$$0.001$$ pascal second: Since, $$1$$ pascal second is equivalent to $$10$$ poise. Therefore, $$1$$ poise = $$0.1$$ pascal second. Hence, The option $$0.001$$ is incorrect.

OPTION B.
$$0.0001$$ pascal second: Since, $$1$$ pascal second is equivalent to $$10$$ poise. Therefore, $$1$$ poise = $$0.1$$ pascal second. Hence, The option $$0.0001$$ is incorrect.

OPTION C.
$$0.01$$ pascal second: Since, $$1$$ pascal second is equivalent to $$10$$ poise. Therefore, $$1$$ poise = $$0.1$$ pascal second. Hence, The option $$0.01$$ is incorrect.

OPTION D.
$$0.1$$ pascal second: Since, $$1$$ pascal second is equivalent to $$10$$ poise. Therefore, $$1$$ poise = $$0.1$$ pascal second. Hence, The option $$0.1$$ is correct.

Hence, The option D: $$0.1$$ pascal second is the correct answer.

Note: Poise is the equality or the equal distribution of weight and a state of balance or equilibrium. Viscosity is measured in terms of a ratio of shearing stress to the velocity gradient in a fluid.