A spherical ball is dropped in a long column of viscous liquid. The speed $v$ of the ball varies as function of time as

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Important Questions on Mechanical Properties of Fluids

EASY

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IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 10 - Mechanical Properties of Fluids>Assignment>Q 28

If

T

is the surface tension of a fluid, then the energy needed to break a liquid drop of radius

R

into

64

equal drops is

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Gamma Question Bank for Medical Physics>Chapter 10 - Mechanical Properties of Fluids>Assignment>Q 29

The excess pressure inside a spherical drop of water is four times that of another drop. Then their respective mass ratio is

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Gamma Question Bank for Medical Physics>Chapter 10 - Mechanical Properties of Fluids>Assignment>Q 30

The work done in blowing a soap bubble of

10 cm

radius is (surface tension of soap solution is

0.03 N m^{- 1}

)

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IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 10 - Mechanical Properties of Fluids>Assignment>Q 32

Water rises to a height of, $10 cm$ in a capillary tube and mercury falls to a depth of, $3.42 cm$ in the same capillary tube. If the density of mercury, $13.6 kg m^{- 3}$ is and the angle of contact is $135 °$ , the ratio of surface tension for water and mercury is (angle of contact for water and glass is $0 °$ ).