Water flows through two identical tubes A and B. A volume V0 of water passes through the tube A and 2 V0 through B in a given time. Which of the following may be correct?

(a) Flow in both the tubes are steady.

(b) Flow in both the tubes are turbulent.

(c) Flow is steady in A but turbulent in B.

(d) Flow is steady in B but turbulent in A.

Choose the correct option:

1. (a), (b) and (c)

2. (b), (c) and (d)

3. (a) and (b)

4. (b) and (c)

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

Choose the correct option from the given ones:

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:

Choose the correct option from the given ones:

By the surface of a liquid, we mean:

An ice cube is suspended in a vacuum in a gravity-free hall. As the ice melts it,

When water droplets merge to form a bigger drop:

Air is pushed into a soap bubble of radius r to double its radius. If the surface tension of the soap solution is S, the work done in the process is

1. 8 \(\pi\) r² S

2. 12 \(\pi\) r² S

3. 16 \(\pi\) r² S

4. 24 \(\pi\) r² S

If more air is pushed in a soap bubble, the pressure in it

1. decreases

2. increases

3. remains same

4. becomes zero

If two soap bubbles of different radii are connected by a tube,

The figure shows a capillary tube of radius \(r\) dipped into water. If the atmospheric pressure is \(P_0,\) the pressure at point \(A\) is:

1. \(P_{0}\)

2. \(P_{0}+\dfrac{2 S}{r}\)

3. \(P_{0}-\dfrac{2 S}{r}\)

4. \(P_{0}-\dfrac{4 S}{r}\)