Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 2 (Q.No. 7)
7.
Surface tension of water when in contact with air is 0.0737 N/m. The difference of pressure between the inside and outside of a droplet of rain water 1 mm in diameter is nearly equal to
Discussion:
4 comments Page 1 of 1.
Mushtaq Ahmad said:
3 years ago
1): P=4*sigma/d.
2): 8 * sigma/ d.
Put values in both formulas and then subtract the result of both to get the answer.
2): 8 * sigma/ d.
Put values in both formulas and then subtract the result of both to get the answer.
Mumtaz said:
5 years ago
4 * 0.0737 * 1/1000 * 9.81 * 10-3-0.3kN/m2.
SHUBHAM SAMYAL said:
7 years ago
For jet - 2 * s.ten/dia.
For bubble - 8 * s.ten/dia.
For drop - 4 * s.ten/dia.
For bubble - 8 * s.ten/dia.
For drop - 4 * s.ten/dia.
Ravi said:
1 decade ago
= (4*Surface tension)/Dia.
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