A sudden drop in the mercury level by 10 mm or more is a sign of

What is the excess pressure inside a drop of mercury of radius 3.0 mm? (Surface tension of mercury is 4.65 xx 10^(-1) N m^(-1) )

What will the effect on the temperature, if the number of small drops fo mercury coalesce adiabatically to form a single drop?

A cup contains some mercury in it. Now a narrow glass tube is lowered in the mercury. After some time the mercury level in the tube becomes lower than the mercury level outside the tube as shown in diagram. During this process (Choose correct statements)

the vacuum above the mercury level in a barometer is called ____.

Calculate the work done in spraying a spherical drop of mercury of 1 mm radius into a million droplets of equal size. The surface tension of mercury =550 xx10^(-3) Nm^(-1)

A quantity of gas is collected in a gradutated tube over the mercury. The volume of the gas at 20^(@)C is 50.0 mL and the level of the mercury in the tube is 100 mm above the outside mercury level. The barometer reads 750 mm . Volume at STP is

If n identical drops of mercury are combined to form a bigger drop then find the capacity of bigger drop, if capacity of each drop of mercury is C.

The diameter of the mercury barometer tube is recorded as 6 mm. How much error is introduced due to surface tension in this reading. Surface tension of mercury is 540 xx 10^(-3)" N/m" Angle of contact for mercury is 140^@ .

A capillary tube is radius 0.02 cm is dipped vertically in a beaker containing mercury . The level of mercury in the tube with respect to the mercury level in the beaker will be (Given density of mercury 13.5 g/cc ,Surface tension 540 dyne/cm and the angle of contact 135^(@) )

Calculate the diameter of a capillary tube if angle of contact of mercury is 140^@ and mercury is depressed by 10.2 mm in the tube. Surface tension of mercury is 5400 xx 10^(-4)" N/m" .