Home
Class 12
PHYSICS
A drop of liquid of diameter 2.8 mm bre...

A drop of liquid of diameter 2.8 mm breaks up into 125 identical droplests . The change in energy is nearly (S.T . Of liquid =75 dyne/cm)

A

Zero

B

19 erg

C

46 erg

D

74 erg

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

The surface energy of a liquid drop is U sprayed into 125 identical drops, then the total surface energy will be.

A drop of mercury 2 mm in diameter breaks into a million small spherical droplets, all of same size. Calculate the work done. (S.T. of mercury = 0.46 N/m)

If a drop of water of radius 0.1 cm is broken up into a million droplets all of the same size, then the energy expand in the process will be (T=75 dyne//cm)

The work done in splitting a drop of water of 1 mm radius into 64 identical droplets is (S.T. of water is 72xx10^(-3) j//m^2)

A drop of water placed between two parallel glass plates which are then pressed together unil the water film is 0.01 cm thick. If the area of water in contact with either plate is 10 cm^2 , then the force due to surface tension drawing the plates together is (S.T. of water is 75 dyne/ cm)

A soap bubble of diameter 6mm is formed in air . The surface tension of liquid is 30 dyne/cm . The excess pressure inside the soap bubble is

A wire ring of diameter 14cm is gently lowered on to a liquid surface and then pulled up. When the film just breaks, the force required is 0.0616N . The surface tension of the liquid is

A liquid of density 700 kg//m^3 rises to a height of 12 mm in capillary tube of 2.7 mm diameter. If angle of contact is 30^@ , find the surface tension of liquid, ( g = 9.8 m//s^2 )

Calculate the viscous force acting on a rain drop of diameter 1mm, falling with a uniform velocity 2 m//s through air. The coefficient of viscosity of air is 1.8 xx 10^-5 Ns//m^2 .