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A ball of mass m=0.5kg is suspended by a...

A ball of mass `m=0.5kg` is suspended by a thread and a charge `q=0.1muC` is supplied when a ball with diameter `5cm` and a like charge of same magnitude is brought close to the first ball but below it the tension decreases to `1//3` of its intial value .The distance between centres of the balls is

A

`0.12xx10^(-2)m`

B

`0.51xx10^(-4)m`

C

`0.2xx10^(-5)m`

D

`0.52xx10^(-2)m`

Text Solution

Verified by Experts

The correct Answer is:
4
`T+(1)/(4piepsilon_(0))(q_(1)q_(2))/(r^(2))=mg`
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Knowledge Check

  • A ball of mass 0.1 kg is suspended by a string. It is displaced through an angle of 60^(@) and left. When the ball passes through the mean position, the tension in the string is

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    `19.6N`
    B
    `1.96 N`
    C
    `9.8 N`
    D
    Zero

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