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The number of independent directions in which a system (or gas molecule) can have motion, are called as the number of degrees of freedom of that molecule or object. The number of degree of freedom is required to express the position, motion and energy of a body. If a molecule in motion is confined to a straight line it has only one transnational degree of freedom, whereas if the same molecule is confined to move in a plane, it will have two translational degrees of freedom. If the particle is free to move in plane, it will have three dimensional degrees of freedom.
A gas particle can have following parts of energies:
(a) Translational kinetic energy (b) Rotational kinetic energy
(c) Vibrational kinetic energy
Flemings right hand rule: When a straight wire is moved through a magnetic field, an emf is induced in it, in the manner of the coil and magnet experiment. Once again, li
State and illustrate Huygens' principle. Explain the consequences of total internal reflection.
Q. A light of wavelength 6000 0 A falls normally on a thin air film, 6 dark fringes are seen between two points. Compute the thickness of the film. 2μt = nλ Thickness of t
(i)Cathode waves always travel in straight path. (ii) Cathode rays exert mechanical force on the objects they strike. (iii) Cathode rays make fluorescence. (iv)
Get an expression for lateral shift produced by a parallel sided glass slab placed in air.
An inductor is generally constructed as a coil of conducting material, characteristically copper wire, wrapped around a core either of air or a ferromagnetic material. Core materia
Stress is measured by the deforming force per unit normal area. Stresses set up in an object due to of the action of forces can be divided into three broad categories (a) Ten
Curie's law (P. Curie) The susceptibility, khi, of an isotropic paramagnetic substance is associated to its thermodynamic temperature T through the equation khi = C/T
as flux = E.A and flux density is equal to flux/A then why A/A cannot e cancelled ?
to derive expreation for magnitude & direction for the resultant which two are acting at a point
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