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Fermat's principle; principle of least time (P. de Fermat):
The principle put by P. de Fermat, which states the path taken through a ray of light among any two points into a system is always the path which takes the least time.
Q. Explain what do you understand by the terms potential well and potential barrier. How does a particle with energy lesser than the barrier height tunnels through its quantum mech
Q. Define: current density. Give its unit. The amount of charge passing per unit time through unit area taken perpendicular to the direction of flow of charge at that point is
The discharge over a triangular notch can be written as Q = (8/15) Cd (2g)0.5 tan(θ/2) H5/2 If an error of 1% in measuring H is introduced determine the corresponding error
When a string under tension is set into vibration, transverse harmonic rays propagate along its length. When the size of string is same, reflected rays will also exist. The operati
Basic concepts of electromagnetic spectrum: BASIC CONCEPTS 1. When Sun light falls on a prism, the transmitted light produces a sequence of colours called 'Spectrum'. 2
Obtain expression for an optical path difference for formation of circular fringe in Michelson''s interferometer
MOTION EXAM WITH ANSWERS
50 gm of an optically active substance is dissolved in 100 ml of water. A plane polarised light, when passing through 30 cm of the solution, suffers a rotation of 390 in it's plane
Explain the concept of coherence.Discuss temporal coherence and spatial coherence.
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