A steel ball is dropped in oil, then

A vessel contains oil (density = 0.8 g cm^-3 ) over mercury (density = 13.6 g cm^-3 ).  A homogeneous sphere floats with half of its volume immersed in mercury and the other half in oil.  The density of the material (in g cm^-3 ) is

Bernoulli's equation is an example of conservation of

The radii of two soap bubbles are R₁ and R₂ .  If they coaleasce, the radius of curvature of the common surface will be :

Liquid rises to a height of 2 cm in a capillary tube.  The angle of contact between solid and liquid is zero.  The tube is depressed more now so that the tip of the capillary tube is only 1 cm above the liquid, the apparent angle of contact between solid and liquid is

If there were no gravity, which of the following will not be there for a fluid ?

n small drops of radius r, combine to form a bigger drop of the radius R.  If the energy evolved provides K.E to the drop then the speed of the drop will be (density of drop = d and surface tension of liquid = T)

A drop of water of volume 0.05 cm³  is pressed between two glass plates, as a consequence of which spreads and occupies an area of 40 cm² .  If the surface tension of water is 70 dyne/cm, then the normal force required to separate out the two glass plates will be :

One large soap bubble of diameter D breaks into 27 bubbles having surface tension T.  The change in surface energy is

A jar is filled with two non-mixing liquids 1 and 2 having densities ρ₁ and ρ₂ respectively.

A solid ball, made of a material of density ρ₃ , is dropped in the jar.  It comes to equilibrium in the position shown in the figure.  Which of the following is true for ρ₁ and ρ₂ and ρ₃ ?