Question

1 poise = _________ Ns/m^2. Fill in the blanks.

(a) 0.01

(b) 0.1

(c) 1

(d) 10

This question was posed to me in an online interview.

The above asked question is from Fluids Mechanical Properties in portion Mechanical Properties of Fluids of Physics – Class 11

Answer 1

Correct option is (b) 0.1

Explanation: Poise is the C.G.S unit of coefficient of viscosity.                                                                                       poise = dyne-s/cm^2.                                                                                                                                                 1Ns/m^2 = 10^5* 1/10^4 dyne-s/cm^2 = 10 dyne-s/cm^2.

∴ 1 dyne-s/cm^2 = 0.1 Ns/m^2 = 1 poise.