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Water is flowing continuously

Question:

Water is flowing continuously from a tap having an internal diameter $8 \times 10^{-3} \mathrm{~m}$. The water velocity as it leaves the tap is $0.4 \mathrm{~ms}^{-1}$. The diameter of the water stream at a distance $2 \times 10^{-1} \mathrm{~m}$ below the tap is close to :-

  1. $9.6 \times 10^{-3} \mathrm{~m}$

  2. $3.6 \times 10^{-3} \mathrm{~m}$

  3. $5.0 \times 10^{-3} \mathrm{~m}$

  4. $7.5 \times 10^{-3} \mathrm{~m}$


Correct Option: , 2

Solution:

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