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A rain drop of radius 0.3 mm has a termi...

A rain drop of radius 0.3 mm has a terminal velocity in air 1m/s. the viscosity of air is `18xx10^(-5)` poise. The viscous force on it is-

A

`101.73xx10^(-4)` dyne

B

`101.73xx10^(-5)` dyne

C

`16.95xx10^(-5)` dyne

D

`16.95xx10^(-4)` dyne

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The correct Answer is:
A
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ALLEN -ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 1 (Fluid Statics)
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  9. The water level on a tank is 5m high. There is a hole of 1 cm^(2) cro...

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  10. In the following fig., the flow of liquid through a horizontal pipe is...

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  11. The diagram (figure) shows a venturimeter, through which water is flow...

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  12. Water contained in a tank flows through an orifice of a diameter 2 cm ...

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  13. More viscous oil is used in summer than in winterr in motors due to

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  14. With increase in temperature the viscosity of

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  15. A rain drop of radius 0.3 mm has a terminal velocity in air 1m/s. the ...

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  16. Two liquids of densities d(1) and d(2) are flowing in identical capill...

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  17. The velocity of falling rain drop attain limited value bacause of

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  18. The rate of flow of liquid through a capillary tube in an experiment t...

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  19. A copper ball of radius r travels with a uniform speed v in a viscous ...

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  20. Two drops of the same radius are falling through air with a steady vel...

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