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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.
what is the equation for work
Copernican principle (N. Copernicus) The idea, recommended by Copernicus, that the Sun, not the Earth, is at the middle of the Universe. Now we know that neither idea is accur
Define the Nuclear Power As an energy source, nuclear power is an alternative to fossil fuels. Controlled nuclear chain reactions are used to generate electricity in a safe ma
Draw the phasor diagram for an ideal transformer on no-load. (a) A 500 V/100V, single-phase transformer takes a full load primary current of 4A. Neglecting losses, Verify
Q. Define roentgen and activity and Curie? One roentgen (1R) is described as the quantity of radiation which produces 1.6 × 10 12 pairs of ions in 1 gram of air. The activi
The cross-sectional areas of the pistons in the system shown below have a ratio of 25 to 1. If the maximum force that can be applied to the small piston is 12 N. What is the
What is common end? The fiber or fibers should be connected to the illuminator. Particularly in the case of a number of fibers, these have to be bunched together and contain se
Power: The rate of doing work is called power, and it is defined as the work done in unit time. As a formula, this would be: power = work done/time Taken Power is exp
Q. An electron beam is accelerated through a potential difference of 104 volt. Find the de Broglie wavelength. λ = 12.27 A o / √V λ = 12.27 A o / √10 4 = 0.1227
What are "Overtones" and "Harmonics" ? How are they build in an open pipe? Derive the mathematical equations for the frequencies of the harmonics produced in an open pipe.
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