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A metal plate of area 10^(3)" "cm^(2) re...

A metal plate of area `10^(3)" "cm^(2)` rests on a layer o oil 6 mm thick. A tangential force of `10^(-2)` N is appled on it to move it with a constant velocity of 6 cm `s^(-1)` . The coefficient of viscosity of the liquid is :-

A

0.1 poise

B

0.2 poise

C

0.3 poise

D

0.4 poise

Text Solution

Verified by Experts

The correct Answer is:
A
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Knowledge Check

  • A metal plate ofarea 100 sq. cm, rests on a layer of oil 2mm thick. A force of 0.1 N applied parallel to the plate horizontally keeps it moving with uniform speed of 1cm/ s. What is the coefficient of viscosity of oil ?

    A
    `0.5Ns//m^2`
    B
    `1Ns//m^2`
    C
    `1.5Ns//m^2`
    D
    `2Ns//m^2`

  • A metal plate of area 500 cm^92) is kept on a horizontal surface with a layer of oil of thickness 0.5 mm between them. The horizontal force required to drag the plate with a velocity of 2 cm/s is (coefficient of viscosity =0.9 kg/ms)

    A
    180 N
    B
    18 N
    C
    `0.018` N
    D
    `1.8 N`

  • There is a 1 mm thick layer of oil between a flat plate of area 10^(-2)m^(2) and a big plate. How much force is required to move the plate with a velocity of 1.5 cm//s^ . The coefficient of viscosity of oil is 1 poise

    A
    `1.5xx10^(-3)N`
    B
    `1.3xx10^(-5)N`
    C
    `1.5xx10^(-2)N`
    D
    `1.5xx10^(2)N`