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The number of surfaces of a hollow cyl...

The number of surfaces of a hollow cylindrical object is (a) 1          (b)   2               (c)  3                 (d)  4

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1 inner surface,1 outer surface,2 rings
so ans is (d)4
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RD SHARMA-SURFACE AREA AND VOLUME OF A RIGHT CIRCULAR CYLINDER-All Questions
  1. In a cylinder, if radius is doubled and height is halved, curved sur...

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  2. Two cylindrical jars have their diameters in the ratio 3:1, but hei...

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  3. The number of surfaces in right cylinder is

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  4. Vertical cross-section of a right circular cylinder is always a (a)...

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  5. If r is the radius and h is height of the cylinder the volume will...

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  6. The number of surfaces of a hollow cylindrical object is (a) 1      ...

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  7. If the radius of a cylinder is doubled and the height remains same, ...

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  8. If the height of a cylinder is doubled and radius remains the same, ...

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  9. In a cylinder, if radius is halved and height is doubled, the volum...

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  10. If the height of a cylinder is doubled, by what number must the radi...

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  11. The volume of a cylinder of radius r is 1/4 of the volume of a rec...

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  12. The height h of cylinder equals the circumference of the cylinder. In ...

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  13. A cylinder with radius r\ and height h is closed on the top and bot...

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  14. The height of sand in a cylindrical-shaped can drops 3 inches when 1...

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  15. If the diameter of the base of a closed right circular cylinder be e...

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  16. A right circular cylindrical tunnel of diameter 2m and length 40m is...

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  17. Two sheet sheets each of length a1 and breadth a2 are used to pr...

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  18. Two circular cylinder of equal volume have their heights in the rati...

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  19. The radius of a wire is decreased to one-third. If volume remains t...

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  20. The altitude of a circular cylinder is increased six times and the ...

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