A manometer connected to a closed tap reads 3.5 × 10 5 N/m 2 , When the value is opened, the reading of manometer falls to 3.0 × 10 5 N/m 2 , then velocity of flow of water is
A
100 m/s
B
10 m/s
C
1 m/s
D
10 
m/s
m/s
Text Solution
Verified by ExpertsThe correct answer is:
B
Bernoulli's theorem for unit mass of liquid
= constant
As the liquid starts flowing, it pressure energy decreases
⇒ 
= 
⇒ u 2 = 100 ⇒ u = 10 m/s
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