H C Verma Solutions for Chapter: Fluid Mechanics, Exercise 3: OBJECTIVE II

A solid floats in a liquid in a partially dipped position. Which of the following are true?

The weight of an empty balloon on a spring balance is $W_1.$ The weight becomes $W_2$ when the balloon is filled with air. Let the weight of the air itself be $w.$ Neglect the thickness of the balloon when it is filled with air. Also, neglect the difference in the densities of air inside and outside the balloon.

A solid is completely immersed in a liquid. The force exerted by the liquid on the solid will

A closed vessel is half-filled with water. There is a hole near the top of the vessel and air is pumped out from this hole. Which of the following are true?

In a streamline flow,

Water flows through two identical tubes $\mathrm{A}$ and $\mathrm{B}$. A volume $V_0$ of water passes through the tube $\mathrm{A}$ and $2V_0$ through $\mathrm{B}$ in a given time. Which of the following may be correct?

Water is flowing in a streamline motion through a tube with its axis horizontal. Consider two points $\mathrm{A}$ and $\mathrm{B}$ in the tube at the same horizontal level.

There is a small hole near the bottom of an open tank filled with a liquid. The speed of the water ejected does not depend on