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When a hollow metallic sphere is heated,...

When a hollow metallic sphere is heated, the volume of the cavity inside that sphere

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C
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Knowledge Check

  • External and internal radii of a hollow sphere are R and r respectively. If the sphere will be heated then the volume of the hole inside of the sphere will be

    A
    A.same
    B
    B. reduced
    C
    C. increased
    D
    D. reduced in `r lt lt R`, increased if r = R

  • If the surface area of a cube and a sphere are equal, then the ratio of the volumes of the cube and the sphere is :

    A
    `pi:6`
    B
    `sqrtpi:sqrt6`
    C
    `sqrt6:sqrtpi`
    D
    `6:pi`

  • If the volume of a sphere be 8 times the volume of another sphere, then the ratio of the curved surface areas of the two spheres will be

    A
    `2:3`
    B
    `1:8`
    C
    3:16`
    D
    `1:4`

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