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Water is flowing continuously from a tap having an internal diameter 8 xx 10^(-3) m. The water velocity as it leaves the tap is 0.4 ms^(-1). The diameter of the water stream at a distance 2 xx 10^(-1) m below the tap is close to: |
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Answer» `7.5 XX 10^(-3) m` `P_(0)+1/2pv_(1)^(2)+pgh=P_(0)+1/2pv_(2)^(2)+0` `v_(2)=SQRT(v_(1)^(2)+2gh)=sqrt(0.16+2xx10xx0.2)=2.03m//s` From continuity equation `A_(2)v_(2)=A_(1)v_(1)` `pi(D_(2)^(2))/4v_(2)=pi(D_(1)^(2))/4v_(1)` `D_(2)D_(1)sqrt((v_(1))/(v_(2)))3.5510^(-3)m` CORRECT choice : ( c) |
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