The amount of energy required to form a bubble of radius 2 cm from a soap solution is nearly: (surface tension of soap solution <math> <mo>=</mo> <mn>0.03</mn> <mtext> </mtext> <mi mathvariant="normal">N</mi> <msup> <mrow> <mrow> <mtext> </mtext> <mi mathvariant="normal">m</mi> </mrow> </mrow> <mrow> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </mrow> </msup> </math> )

Surface energy of bubble = 2 * charge in surface area x<!- [endif]-><!- [endif]-> surface tension = 8 ? R 2 * T = 8 * 3.142 * 4 * 10 - 4 * 3 * 10 - 2 J = 30.1 * 10 - 5 J <!- [endif]-><!- [endif]->

The amount of energy required to form a bubble of radius 2 cm &nbsp;from a soap solution is nearly: (surface tension of soap solution <math> <mo>=</mo> <mn>0.03</mn> <mtext> </mtext> <mi mathvariant="normal">N</mi> <msup> <mrow> <mrow> <mtext> </mtext> <mi mathvariant="normal">m</mi> </mrow> </mrow> <mrow> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </mrow> </msup> </math> &nbsp;) &lt;!-- [if !supportLineBreakNewLine]--&gt; &lt;!--[endif]--&gt;

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Physics Class 11th Physics Mechanical Properties of Fluids

The amount of energy required to form a bubble of radius 2 cm from a soap solution is nearly: (surface tension of soap solution $= 0.03 N m^{- 1}$ )

Option 1 -

$50.1 * 10^{- 4} J$

Option 2 -

$30.1 * 10^{- 4} J$

Option 3 -

$5.06 * 10^{- 4} J$

Option 4 -

$3.01 * 10^{- 4} J$

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Answered by

Raj Pandey | Contributor-Level 9

4 weeks ago

Correct Option - 4

Detailed Solution:

Surface energy of bubble $= 2 *$ charge in surface area x surface tension

$\begin{array}{r} = 8 ? R^{2} * T \\ = 8 * 3.142 * 4 * 10^{- 4} * 3 * 10^{- 2} J \\ = 30.1 * 10^{- 5} J \end{array}$

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