If the excess pressure inside a soap bubble is balanced by an oil column of height of \(2\) mm, then the surface tension of the soap solution will be: (radius of the soap bubble, \(r=1\) cm and density of oil, \(d=0.8\) gm/cm3)
1. \(3.9\) N/m
2.
3.
4. \(3.9\) dyne/m
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe energy needed to break a drop of radius R into n drops of radii r is given by:
1. | 2. | ||
3. | 4. |
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