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When the wind blows at a high speed, the...

When the wind blows at a high speed, the roof of a house is blown off because :

A

the pressure under the roof increases

B

Pressure above the roof increases

C

Pressure above the roof decreases

D

The wind pushes off the roof

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The correct Answer is:
C
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AAKASH SERIES-MECHANICAL PROPERTIES OF FLUIDS -EXERCISE-IA
  1. By sucking through a straw, a student can reduce the pressure in his l...

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  2. The viscosity of water is

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  3. When the wind blows at a high speed, the roof of a house is blown off ...

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  4. A sealed tank containing a liquid of density rho moves with a horizont...

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  5. The tube shown in of uniform cross-section. Liquid lows through it at ...

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  6. Water coming out of the mouth of a tap and falling vertically in strea...

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  7. The speeds of air-flow on the upper and lower surfaces of a wing of an...

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  8. A closed vessel is half filled with water. There is a hole near the to...

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  9. When a body is weighed in a liquid the apparent loss in it's weight is...

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  10. In the case of motion of a fluid in a tube where area of cross section...

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  11. When an air bubble moves up from the bottom of a lake a) velocity de...

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  12. Water is flowing streamline motion through a tube with its axis horizo...

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  13. Water flows through two identical tubes A and B. A volume V(0) of wate...

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  14. There is a small hole near the bottom of an open tank filled with a li...

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  15. A liquid flows through a horizontal tube. The velocities of the liquid...

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  16. In the figure, an ideal liquid flows through the tube, which is of uni...

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  17. The ratio of inertial force to viscous force represents

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  18. Dynamic lift due to spinning is

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  19. A fluid is in streamline flow across a horizontal pipe of variable are...

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  20. Scent sprayer is based on

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