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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

0.01 poise

B

0.5 poise

C

0.7 poise

D

0.9 poise

Text Solution

Verified by Experts

The correct Answer is:
A
We know that viscosity of liquid is given by
`eta=(F)/(A(dv//dy))`
`eta=(10^(-2))/(10^(-3)xx10^(-4)((6xx10^(-4))/(6xx10^(-3))))`
`=0.01 ` Poise
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