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28. If the excess pressure inside a soap bubble is balanced by oil column of height 2 mm
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Posts tagged “28. If the excess pressure inside a soap bubble is balanced by oil column of height 2 mm”
28. If the excess pressure inside a soap bubble is balanced by oil column of height 2 mm, then the surface tension of soap solution will be (r = 1 cm and density d = 0.8 gm/cc)
Jun 7, 2022
Physics
(a) 3.9 N/m (b) 3.9 ×10–2 N/m (c) 3.9 ×10–3 N/m (d) 3.9 dyne/m Ans. b (5)
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