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Water is flowing in a pipe of diameter 4...

Water is flowing in a pipe of diameter 4 cm with a velocity `3 m//s` . The water then enters into a tube of diameter 2 cm . The velocity of water in the other pipe is

A

3 m/s

B

6 m/s

C

12 m/s

D

8 m/s

Text Solution

Verified by Experts

The correct Answer is:
C
`A_1 v_1 = A_2 v__2`
`implies pi r_1^2 xx v_1=pi r_2^2 xx v_2 implies pi(2)^2xx3=pi(1)^2 xx v_2`
`implies 4xx3=1xx v_2 implies v_2=12 m//s`
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