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The SI unit of viscosity coefficient is...

The `SI` unit of viscosity coefficient is

A

`Nms^(-1)`

B

`Nm^(2) s^(-1)`

C

`Nm^(-2) s`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
Unit of `eta " is " Nm^(-2)` s.
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The coefficient of viscosity n of a fluid moving steadily between two surfaces is given by the formula, f = nA(dV)/(dx) where f is the frictional force on the fluid, A is an area in the fluid and dV//dx is the velocity gradient inside the fluid at that area. The SI unit of viscosity coefficient n is given as.

What is SI unit of viscosity coefficient (eta) ?

The coefficient of viscosity (eta) of a fluid moving steadily between two surface is given by the formula (f) = etaA dV//dx where f is the frictional force on the flluid, A is the area in the fluid, and dN//dx is velocity gradient inside the fluid at that area. The SI unit of viscosity is given as :

Knowledge Check

  • The coefficient of viscosity n of a fluid moving steadily between two surfaces is given by the formula, f = nA(dV)/(dx) where f is the frictional force on the fluid, A is an area in the fluid and dV//dx is the velocity gradient inside the fluid at that area. The SI unit of viscosity coefficient n is given as.

    A
    `kgm^(-1)s^(-1)`
    B
    `Nm^(-2)s^(-2)`
    C
    Nil, it is dimensionless constant
    D
    newtons

  • What is SI unit of viscosity coefficient (eta) ?

    A
    Pascal
    B
    `Nsm^(-2)`
    C
    `Km^(-2)s`
    D
    `Nm^(-2)`

  • What is SI units of viscosity coefficient (eta) ?

    A
    Pascal
    B
    Ns `m^(-2)`
    C
    `km^(-2)`s
    D
    N `m^(-2)`