MHT-CET Previous year questions Chapter-wise Physics Surface Tension

Two spherical soap bubbles of a radii r1​ and r2​ in vacuum coalesce under isothermal conditions. The resulting bubble has the radius $R$ such that

A liquid rises to a height of 1.8cm in a glass capillary A. Another glass capillary B having diameter 90% of capillary A is immersed A is immersed in the same liquid. The rise of liquid in capillary B is

A small metal ball of mass m is dropped in a liquid contained in a vessel, attains a terminal velocity v . If a liquid metal ball of same material but of mass 8m is dropped in same liquid then the terminal velocity will be

A liquid drop having surface energy E is spread into 512 droplets of same size. The final Surface energy of the droplets is

A big water drop is formed by the connection of n small water drops of equal radii. The ratio of surface energy of n drops to the surface energy of big drop is

In a capillary tube having area of cross section A water rises to height h. If cross sectional area is reduced to A/9 the rise of water in the capillary tube is

The excess of pressure due to surface tension on a spherical liquid drop of radius is proportional to

A transverse wave is propagating on string .The linear density of a vibrating string is 10^-3 kg/m. The equation of the wave is Y=0.05sin(x+15t) where x and Y are in metre and time in second . The tension in the string is

In air, charged soap bubble of radius R breaks into 27 small soap bubbles of equal radius r .Then the ratio of mechanical force acting per unit area of big soap bubble to that of a small bubble is