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The work done to blow a bubble is W. The...

The work done to blow a bubble is W. The extra work to be done to double its radius is

A

W

B

2W

C

3W

D

4W

Text Solution

Verified by Experts

The correct Answer is:
C
`W_(1)=8piR^(2)T," "W_(2)=32piR^(2)T,`
`DeltaW=W_(2)-W_(1)=24piR^(2)T rArr DeltaW=3W`
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Knowledge Check

  • The work done is blowing a soap bubble of volume V is W . The work done in blowing a soap bubble of volume 2V is

    A
    `W`
    B
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    C
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    D
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  • The work done in blowing a soap bubble of radius 5 cm is

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    B
    1570 J
    C
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    D
    `1.57 xx 10^(4)`erg

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    A
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    B
    `100piR^2T`
    C
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    D
    `256piR^2T`

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