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The radius of a cylindrical cistern i...

The radius of a cylindrical cistern is 10 metres and its height is 15 metres. Initially the cistern is empty. We start filling the cistern with water through a pipe whose diameter is 50 cm. Water is coming out of the pipe with a velocity of 5 m/sec. How many minutes will it take in filling the cistern with water? (a) 20 (b) 40 (c) 60 (d) 80

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The correct Answer is:
80 min
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S CHAND IIT JEE FOUNDATION-VOLUME AND SURFACE AREA -Unit Test - 5
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  4. If x and y are respectively the areas of a square and a rhombus of sid...

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  5. If the area of a circle inscribed in an equilateral triangle is 4pi" c...

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  7. The two diagonals of a rhombus are of lengths 55 cm and 48 cm. If p is...

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  8. In the given figure, AC is a diameter of a circle with radius 5 cm. if...

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  9. The radius of a circle is 20 cm. Three more concentric circles are dra...

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  10. ABCD is a trapezium in which AB||CD and AB=2CD. It its diagonals inter...

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  11. If the perimeter of an isosceles right triangle is (6+3sqrt(2))m , ...

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  12. Sixteen cylindrical cans each with a radius of 1 unit are placed insid...

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  13. Find the number of coins, 1.5 cm in diameter and 0.2 cm thick, to b...

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  14. A solid metallic cube of edge 4 cm is melted and recast into solid cub...

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  15. A cylindrical vessel of base radius 14 cm is filled with water to some...

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  16. Increasing the radius of a cylinder by 6 units increases the volume by...

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  17. A metallic cube of edge 2.5 cm is melted and recasted into the form of...

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  18. The volume of metallic cylindrical pipe is 748\ c m^3dot Its length...

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  19. A rectangular paper 11 cm by 8 cm can be exactly wrapped to cover the ...

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  20. A solid cylinder has total surface area of 462 square cm. Its curve...

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  21. The barrel of a fountain pen, cylindrical in shape, is 7 cm long and 5...

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