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A metal plate of area 2m^2 is pulled hor...

A metal plate of area `2m^2` is pulled horizontally with a velocity of `0.5m^-1` on a liquid layer `1mm` thick. The force required, if the viscosity of liquid is `12Nsm^-2` is

A

`1.2N`

B

`12N`

C

`12000N`

D

`1200N`

Text Solution

Verified by Experts

The correct Answer is:
C
`F=(etaAv)/(y)=(12xx2xx0.5)/(1xx10^-3)N=12000N`
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