Identify the statement that is true for London forces.
These forces are always attractive, and the interaction energy is inversely proportional to the sixth power of the distance between two interacting particles.
The correct answer is These forces are always attractive, and the interaction energy is inversely proportional to the sixth power of the distance between two interacting particles.
Their energy dependence is proportional to $1/r^6$. London Dispersion Forces: Occur between all molecules (polar and nonpolar) due to instantaneous dipoles. Their energy dependence is also proportional to $1/r^6$. While dipole-dipole forces are generally stronger than London forces for molecules of comparable size and shape, London forces become increasingly significant for larger molecules with more electrons, as they are more polarizable.
Important Questions from Fluid Kinematics
In a free vortex, velocity
The velocity potential function for a line source varies with radial distance, r as
If ψ = xy, the magnitude of the velocity vector at (2, -2) is
A velocity field is given by the equation v = (2 + 6x - 6y)i + (3x + cx - y)j. For the flow to be irrotational the value of constant ‘c’ is
If fluid properties in a flow are constant with space at any instant of time, the flow is termed as:
