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Velocity of water at the depth in river ...

Velocity of water at the depth in river is always slow.

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Velocity of water in a river is …….

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What is the density of water at a depth where pressure is 80.0 atm, given that its density at the surface is 1.03xx103" kg m"^(-3) ?

Assertion:- The magnitude of velocity of two boats relative to river is same. Both boats start simultaneously from same point on one bank They may reach opposite bank simultaneously moving along different straight line paths. Reason:- For boats to cross the river in same time, the compnonet of their velocity relative to river in direction normal to flow should be same.

Can Bernoulli's equations be used to describe the flow of water through a rapid in a river ? Explain .

A man crosses a river in a boat. If he cross the river in minimum time he takes 10 min with a drift 120 m. If he crosses the river taking shortest path, he takes 12.5 min, find (a) width of the river (b) velocity of the boat with respect to water (c) speed of the current

A motor boat is to reach at a point 30^@ upstream on the outer side of a river flowing with velocity 5 ms^(-1) . The velocity of motor boat with respect to water is 5(sqrt3) ms^(-1) . The driver should steer the boat at an angle.

Velocity of a boat relative to river current and river current velocity are equal in magnitude. Starting from point A on the southern bank, the boatman wants to reach a point B on the nothern bank in north - east from A . In which direction he has to steer the boat?

A swimmer starts to swim from point a to cross a river. He wants to reach point B on the opposite side of the river. The line AB makes an angle 60^(@) with the river flow as hown. The velocity of the swimmer in still water is same as that of the water (i) In what direction should he try to direct his velocity ? Calculate angle between his velocity anf river velocity. (ii) Find the ratio of the time taken to cross the river in this situation to the minimum time in which he can cross this river.

KUMAR PRAKASHAN-MECHANICAL PROPERTIES OF FLUIDS -SECTION -C (Objective Questions) (VSQs)
  1. Why tefllon is coated ,the angle of contact between oil and non -stick...

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  2. Why raincoat does not wet in rain ?

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  3. Water rises to a height of 20 mm in a capillary . If the radius of th...

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  4. How the oil lamp produces light through a wick that is lit using a mat...

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  5. Why the moisture is retained in soil when a farm is being plough ?

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  6. Why it is better to wear cotton clothes in summer ?

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  7. Why the refill of marker pen which is used to write on white board is ...

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  8. Why does the water rise in a capillary tube Explain .

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  9. Why does the mercury fall in a capillary tube ?

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  10. A 20 cm long capillary tube is dipped in water The water rises upto 8 ...

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  11. In incompressible flow the density of a fluid changes with time and po...

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  12. Non -viscous flow can be a streamline.

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  13. In a steady flow velocity of the fluid at each point remains identical...

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  14. The Bernoulli equation can be considered to be a statement of the cons...

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  15. The angle of contact between drop of water and material of raincoat is...

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  16. Absence of roughness between two consecutive layers of fluid is the vi...

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  17. If the weight of body is greater than the buoyant force of liquid then...

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  18. Velocity of water at the depth in river is always slow.

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  19. Assertion : For turbulent flow Reynolds number R(e)gt2000. Reason ...

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  20. Assertion : A needle placed carefully placed on the surface of water m...

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