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Optics
In an experiment for determination of refractiveindex of glass of a prism by i – δ, plot, it was foundthat a ray incident at angle 35°, suffers a deviationof 40° and that it emerges at angle 79°. In that casewhich of the following is closest to the maximumpossible value of the refractive index?
Optics
An atomic system consisting of two energy levels with population of higher energy level less than that of lower level,is in thermal equilibrium .show that the absorbtion of radiation dominates stimulated emission if radiation of appropriate frequency is introduced in to the system. Comment on the consequence of this fact for laser action
Optics
Obtain expressions for reflection and transmission amplitude coefficients when
electric vector associated with a plane monochromatic electromagnetic wave is in the
plane of incidence.
electric vector associated with a plane monochromatic electromagnetic wave is in the
plane of incidence.
Optics
An atomic system consisting of two energy levels, with population of higher energy level less than that of the lower level, is in thermal equilibrium. Show that the absorption of radiation dominates stimulated emission if radiation of appropriate frequency is introduced into the system. Comment on the consequences of this fact for laser action.
Optics
Why rainbow appears curved? What is the angle of incidence and emergence out of rain drops ?
Optics
The sodium lamp used in a physics laboratory gives out light uniformly. Suppose
that the lamp uses 40 W. Calculate the magnitude of electric field.
that the lamp uses 40 W. Calculate the magnitude of electric field.
Optics
How can be calculated total focal length and power when two lenses are in contact.
Optics
Why central rings in the Newton's ring always be dark.
Optics
Describe polarisation of light by reflection. How does degree of polarisation vary with angle of incidence of light?
Optics
Obtain an expression for elliptically polarised light resulting due to superposition of two orthogonal linearly polarised light waves
