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1. |
How much work is done to break up a drop of water of radius 1 mm, into 106 numbers of droplets of idential size? (Surface tension of water is 74 dyne/cm) |
A. | 120 ergs |
B. | 150 ergs |
C. | 200 ergs |
D. | 230 ergs |
Answer» B. 150 ergs | |