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UPSC Civil Service Exam Questions

Q1:

The ratio of pressures between two points A and B located respectively at depths 0.5 m, and 2 m below a constant level of water in a tank is

A
1 : 2

B 1 : 2

C 1 : 4

D 1 : 16

ANS:C - 1 : 4

Pressure= p(roh) * g * h,
For depth of 0.5m.
= 1 * 9.81 * 0.5,
= 4.905,
For depth of 2m
= 1 * 9.81 * 2,
= 19.62.

Therefore ratio = 4.905/19.62 = 0.25 = 1/4.



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