Question

what is the si & cgs unit of viscosity​

Answer 1

the si unit of velocity is metre pr second
cgs unit is cm/sec

Answer 2

Answer:

The SI unit of coefficient of viscosity is the pascal second.

Definition: Ifa tangential force per unit area of one newton per square metre is required to maintain a difference in velocity of one metre per second between two parallel layers of a fluid in streamline flow separated by one metre, the coefficient of viscosity of the fluid is one pascal-second.

The CGS unit of coefficient of viscosity is the poise.

Definition: If a tangential force per unit area of one dyne per square centimetre is required to maintain a difference in velocity of one centimetre per second between two parallel layers of a fluid in streamline flow separated by one centimetre, the coefficient of viscosity of the fuid is one poise.