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A soap bubble is given a negative charge...

A soap bubble is given a negative charge, then its radius

A

Decrease

B

Increase

C

Remains unchanged

D

Nothing can be predicted as information is insufficient

Text Solution

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Knowledge Check

  • A soap bubble is given negative charge then its radius

    A
    decreases
    B
    increases
    C
    remains unchanged
    D
    none of these

  • a soap bubble is given positive charge, then its radius.

    A
    Decreases
    B
    Increases
    C
    Remains unchanged
    D
    Nothing can be predicted as information is insufficient.

  • An isolated soap bubble is kept in a container in which the pressure is maintained at P_(0) . The bubble is given some charge due to which its radius increases to R_(0) . If the surface tension of the soap bubble is T, then the charge given to the bubble is

    A
    `Q = 8 pi r sqrt( r T epsilon_(0))`
    B
    `Q = 8 pi r sqrt(2 r T epsilon_(0))`
    C
    `Q = 4 pi r sqrt(2 r T epsilon_(0))`
    D
    `Q = 4 pi r sqrt( r T epsilon_(0))`

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