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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
Consider two identical plastic foam balls each one having a thin sheath of aluminium foil. One of the balls has a few positive charges and the other has the same amount of negative
Q. What do you mean by Time Dilation? To an observer a moving clock always appears to run slower. The time interval between two events occurring at a given point in space in a
2 Kg of ice at -20 degree C is mixed with 5Kg of water 20 degree C in an insulating vessel having negligible heat capacity. Calculate the final mass of water remaining in the comta
Describe Air Traffic Collision in details -The air track is also used to study of collisions, both elastic & inelastic. Since there is very minimum amount of energy lost through f
consider a star orbitining in the sperically graviational potential Y=(Vc)2 ln(r/r0). a)use conservation of energy and angular momentum to obtain equation for dr/dt and d(teta)/dt
In calculating the integral that one evaluates in applying the Biot-Savart Law one is Answer: The Biot-Savart Law itself written in discrepancy form gives the infinitesimal
Frequency The number of vibration done per second by an oscillation body is known its frequency. It is denoted by V. The S.I unit is Hz. V=1/T
An electric dipole is held in a uniform electric field. (1) Using suitable diagram, show that it does not undergo any translatory motion, and (2) derive an expression for the
A VDR is a special type of resistor that changes its resistance with rise in voltage. It has a very high resistance at low voltage (below the trigger voltage) and very low resista
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