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Energy required to form a soap bubble of...

Energy required to form a soap bubble of diameter 20 cm will be (Surface tension for soap solution is 30 dynes/cm )

A

`12000 pi ergs`

B

`1200 pi ergs`

C

`2400 pi ergs`

D

`24000 pi ergs`

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The correct Answer is:
D
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ERRORLESS -SURFACE TENSION-Exercise
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  7. Energy required to form a soap bubble of diameter 20 cm will be (Surfa...

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

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  9. Surface tension of soap solution is 2 xx 10^(-2) N//m . The work done ...

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  11. When a capillary tube is dipped in water, water rises upto 8cm in the ...

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  12. A bubble of 8 mm diameter is formed in the air. The surface tension of...

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  15. The angle of contact between glass and water is 0^@ and surface tensi...

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  16. A drop of water breaks into two droplets of equal size. In this proces...

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  17. A soap bubble of radius R is blown. After heating the solution a secon...

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