Fluid Dynamics… | NUST Entrance Test Physics

The action of perfume bottles depends upon:

Difficulty: Easy

A:

Bernoulli's theorem

B:

Equation of continuity

C:

Surface tension

D:

None

If velocity of efflux is $100 m sec^{-1}$ and area of the hole is $0.06 cm^{2}$, how much volume of water will flow out of the hole in one second?

Difficulty: Easy

A:

6 \times 10^{-4} m^{3}

B:

6 m^{3}

C:

600 m^{3}

D:

6 cm^{3}

Torricelli's theorem states that speed of efflux is ______ the velocity gained by the liquid in falling through the distance h under the action of ________

Difficulty: Easy

A:

Equal to, gravity

B:

Equal to, surface tension

C:

Smaller than, gravity

D:

Greater than, drag force

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