Question

At the mount of the tap area of cross-section is `2.0cm^(2)` and the speed of water is `3m//s`. The area of cross-section of the water column 80 cm below the tap is (use `g=10m//s^(2))`
A. `0.6cm^(2)`
B. `1.2cm^(2)`
C. `1.5cm^(2)`
D. `2.0cm^(2)`

Answer 1

Correct Answer - B
`v_(2)^(2)=v_(1)^(2)+2gh,A_(1)v_(1)=A_(2)v_(2)`