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If the shearing stress between the horiz...

If the shearing stress between the horizontal layers of water in a river is 1.5 `"milli newton"//m^(2)` and `eta_("water")=1xx10^(-3)Pa.s` The velocity gradient is …`s^(-1)`

A

1.5

B

3

C

0.7

D

1

Text Solution

Verified by Experts

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

  • The velocity of water in a river is 18 kmph near the surface. If the river is 4 m deep, the shearing stress between horizontal layers of water in Nm^(-2) is (eta_("water")=1xx10^(-3)pa.s)

    A
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    B
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    C
    `0.75xx10^(-3)`
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  • A river 10 m deep is flowing at 5ms^(-1) . The shearing stress between horizontal layers of the rivers is ( eta=10^-(3) SI units)

    A
    `10^(-3)N//m^(2)`
    B
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    C
    `0.5xx10^(-3)N//m^(2)`
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    `1 N//m^(2)`

  • The velocity of water in a river is 18 km/h near the upper surface. The river 5 m deep. What is the shearing stress between the horizontal layers of water ? (Coefficient of viscosity of water= 10^(- 2) Poise)

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    D
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