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1. |
Consider a spherical drop of liquid having radius ‘R’. Assume a diametric cross-section which divides the drop into two hemispheres. The hemispheres pull each other due to surface tension along the circumference of the diametrical cross-section. What is the value of this force? |
A. | 2πRS |
B. | πR2 S |
C. | 2RS |
D. | 0 |
Answer» B. πR2 S | |