What is meant by lateral shift ?Explain for a given slab,what is the quantity that determines lateral shift?Obtain the expression for lateral shift for refracion throug a parallel sided glasss slab.

The lateral shift produced in a parallel sided glass slab depends on

For what angle of incidenc e,the lateral shift produces by a parallel sided glass plate is zero?

For what angle of incidence,the lateral shift produced by a parallel sided glass plate is maximum?

What is normal shift?Explain.Obtain he expression for normal shift .Indicate,how this helps to determine refractie index of a medium.

What role does pituitary gonadotrophins play during follicular and ovulatory phases of menstrual cycle? Explain the shifts in steroidal secretions.

Explain Polarisation of dielectric slab. What is the effect on capacitance if we introduce a dielectric slab of dielectric Constant K in between parallel plate capacitor, thickness of slab is less than the separation between the plates.

In 1916 Langmuir proposed theory of adsorption of a gas on the surface of the solid to be made up of elementary sites each of which would adsorb one gas. It is assumed that all adsorption sites are equivalent and the ability of a gas molecule to get bound to any one site is independent whether or not the neighbouring sites are occupied. Additionally, it is also assumed that dynamic equilibrium exists between adsorbed and non adsorbed gas molecule. Following principles can be obtained from Langmuir adsorption isotherm The gas adsorbed behaves ideally in a vapour phase . Only monolayer adsorption fakes place . The surface of the solid is homogeneous . There are no lateral interactive force between the adsorbate molecule . The adsorbed gas molecules are localized . What is the nature of adsorption sites ?