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the following table gives the lengths of...

the following table gives the lengths of four copper rods at the temperature ,their diameters and the potential differences between their ends.

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The correct Answer is:
(A) `to q; (B) to p ; ( C) to p ; (D) to q`
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Knowledge Check

  • if rod is rotated about an axis passing through its mid-point , the potential difference between the ends of rod is

    A
    `(BomegaL^(2))/(4)`
    B
    `(BomegaL^(2))/(2)`
    C
    `(3BomegaL^(2))/(4)`
    D
    zero

  • The heat is flowing through two cylinderical rods of same material. The diameters of the rods are in the ratio 1:2 and their lengths are in the ratio 2:1 . If the temperature difference between their ends is the same, the ratio of rates of flow of heat through them will be

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

  • A long horizontal metallic rod with length along the east-west direction is falling under gravity. The potential difference between its two ends will

    A
    Be zero
    B
    Be constant
    C
    Increase with time
    D
    Decrease with time

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