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The dimensional formula for coefficient...

The dimensional formula for coefficient of viscosity is

A

`ML^(-1) T`

B

`ML^(-1) T^(-1)`

C

`MLT^(-1)`

D

`M^(-1) L^(-1)` T

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The correct Answer is:
B
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When a liquid flows in a tube, there is relative motion between adjacent layers of the liquid. This force is called the viscous force which tends to oppose the relative motion between the layers of the liquid. Newton was the first person to study the factors that govern the viscous force in a liquid. According to Newton’s law of viscous flow, the magnitude of the viscous force on a certain layer of a liquid is given by F = - eta A (dv)/(dx) where A is the area of the layer (dv)/(dx) is the velocity gradient at the layer and eta is the coefficient of viscosity of the liquid. The dimensional formula for the coefficient of viscosity is :

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AAKASH SERIES-UNITS AND MEASUREMENTS-EXERCISE -1 A
  1. The ratio of SI Unit to CGS unit of Planck's constant is

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  2. Steradian is the solid angle subtended at the centre of the sphere by ...

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  3. The dimensional formula for coefficient of viscosity is

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  4. [ML^(-1)T^(-2)] is the dimensional formula of

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  5. Heat and Thermal capacity differ in the dimensions of

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  6. Force constant and surface tension have the same dimensions in

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  7. Assertion:Relative magnetic permeability has no units and no dimension...

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  8. (x^2)/("mass") has dimensions of kinetic energy. Then x has the dimens...

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  9. The quantity having negative dimensions in mass is

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  10. h d G has the dimensions of (h = height , d = density , G = Gravitatio...

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  11. The quantity having dimensions only in temperature is

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  12. The dimensional formula for areal velocity is

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  13. If R is the Rydberg constant , C is the velocity and h is the planck's...

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  14. If x times momentum is work , then the dimensions of x are

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  15. The dimensional formula of magnetic induction B is

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  16. The physical quantity which has dimensional formula as that of ("Energ...

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  17. The modulus of elasticity is dimensionally equivalent to

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  18. Planck constant has the same dimensions as

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  19. The fundamental unit which has same power in the dimenssional formula ...

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  20. The dimensions of thermal resistance are

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