Home
Class 11
PHYSICS
A drop of water of volume 0.05 cm^(3) is...

A drop of water of volume `0.05 cm^(3)` is pressed between two glass plates, as a consequence of which, it spreads and occupies an are of `40 cm^(2)`. If the surface tension of water is `70 "dyne"//cm`, find the normal force required to separate out the two glass plates is newton.

A

90

B

45

C

22.5

D

450

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

A small drop of water kept pressed between two glass plates spreads as a circle of diameter 10cm. If the distance between the plates is 0.005 mm, and surface tension of water is 0.072 Nm^(-1) , what force will be required to separate the plates ?

If a water drop is kept between two glass plates, then its shape is

Two vertical glass plates 1 mm apart are dipped into water. How high will the water rise between the plates. If the surface tension of water is 70 dyne cm^(-1)

A water drop of radius 1 mm is broken into 10^(6) identical drops, surface tension of water is 72 dynes/cm find the energy spent in this process.

A small drop of water of surface tension sigma is squeezed between two clean glass plates so that a thin layer of thickness d and area A is formed between them. If the angle of contact is zero, what is the force required to pull the plates apart?

A drop of water of 0.2 g mass is placed between two well cleaned glass plates, the distance between which is 0.01 cm. Find the force of attraction between the plates,

Find the excess pressure inside a liquid drop of radius 2 cm, if the surface tension of water is 0.073 N m^(-1)

The force required to lift a circular flat plate of radius 5 cm on the surface of water is: (Surface tension of water is 75 dyne/cm):-

Two glass plates are separated by water. If surface tension of water is 75 dyn//cm and the area of each plate wetted by water is 8 cm^(2) and the distance between the plates is 0.12 mm , then the force applied to separate the two plates is

A drop of water of mass m and density rho is placed between two weill cleaned glass plates, the distance between which is d . What is the force of attraction between the plates? (T= surface tension)