Water from emerges vertically downward |FLUIDMECHANICJEEMain2019

JEE MAIN 2019

10-04-2019 S2

Question

Water from a tap emerges vertically downwards with an initial speed of $1.0 \mathrm{~ms}^{-1}$. The crosssectional area of the tap is $10^{-4} \mathrm{~m}^2$. Assume that the pressure is constant throughout the stream of water and that the flow is streamlined. The crosssectional area of stream, 0.15 m below the tap would be: $$ \left(\text { Take } \mathrm{g}=10 \mathrm{~ms}^{-2}\right) $$

Select the correct option:

$1 \times 10^{-5} \mathrm{~m}^2$

$5 \times 10^{-5} \mathrm{~m}^2$

$5 \times 10^{-4} \mathrm{~m}^2$

$2 \times 10^{-5} \mathrm{~m}^2$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution