00:01
Hello students, let us understand what viscosity is.
00:04
For that, we divide the fluid into different, different layers.
00:09
And each of these layers, as shown by the green line, they travel with different velocity, such that the velocity of the lowest layer, is less than the velocity of the second layer, which is less than the velocity of the third layer, so on, till the topmost layer.
00:30
That means the velocity of the fluid decreases as we move downwards and increases as we move out to upwards.
00:40
So the topmost layer has the maximum velocity and the bottommost layer has the minimum velocity.
00:48
This difference in the velocity results in resistance between different layers, different of...