Which of the following is not the property of an ideal fluid?

Two identical cylindrical vessels with their bases at the same level, each contains a liquid of density $d$. The height of the liquid in one vessel is $h_1$ and that in the other vessel is $h_2$. The area of either base is $A$. The work done by gravity in equalizing the levels when the two vessels are connected is

The cross-sectional area of a horizontal tube increases along its length linearly as we move in the direction of flow. The variation of pressure, as we move along its length in the direction of flow ($x$-direction), is best depicted by which of the following graphs?

Write the uses of turbulence.

$A$ cylindrical vessel partially filled with water is rotated about its vertical central axis. Its surface will

During constant temperature, we feel colder on a day when the relative humidity is ....... $\%$