The excess pressure due to surface tension inside a spherical drop is 6 units. If eight such drops combine, then the excess pressure due to surface tension inside thelarger drop is
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a
3 units
b
6 units
c
12 units
d
48 units
answer is A.
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Detailed Solution
8×43πr3 = 43πR3; R = 2r2σP =2×2σp or P =p2 = 62 units = 3 units