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A metal plate of area 10^(-2)m^(2) is pl...

A metal plate of area `10^(-2)m^(2)` is placed on a liquid layer of thickness `2xx10^(-3)m`. If the liquid has coefficient of viscosity 2 S.I. units the force required to move the plate with a velocity of `3(cm)/(s)` is

A

0.3N

B

0.03 N

C

3 N

D

30 N

Text Solution

Verified by Experts

The correct Answer is:
A
`F=etaA(dv)/(dx)`
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Knowledge Check

  • Between a plate of area 100 cm^(2) and another plate of area 100 m^(2) there is a 1 mm , thick layer of water, if the coefficient of viscosity of water is 0.01 poise, then the force required to move the smaller plate with a velocity 10 cms^(-1) with reference to large plate is

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    B
    `10^(4)dyn`
    C
    `10^(6) dyn`
    D
    `10^(9)dyn`

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