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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.
Double-slit experiment (T. Young; 1801): A popular experiment which illustrates the wave nature of light (and indeed of other particles). Light is passed out from a small sour
What are fibers optics made of? For visible light or lighting purposes spectrum transmission, several types of fibers are used. Glass in very suitable strands which have to be
Difference between Fission and Fusion Fission Fusion 1. Heavy metal is divided int
9 kg of mercury is powred into a a glass u tube of uniforminternal diameter of 1.2 cm it oscilates freqently about its equilibrium pojistion claculate the time period
(a) A current of 15A fl ows through a load having a resistance of 4Ω . Determine the power dissipated in the load. (b) A wattmeter, whose current coil has a resistance of
Harmful effects of Noise: 1. Noise causes nervous tension, aggression and commotion in normal human beings. 2. Continuous noise damage hearing power and complete deafness.
Regard as a positively charged particle in a circuit. As it moves during a resistor in the circuit the positively charged particle moves from a point one end of the resistor in the
What are the components of endoscope? An endoscope can consist of following components • A rigid or flexible tube • A light delivery system to clarify the organ or object
pseudo force: A "force" that arises since an observer is naively treating an accelerating frame like an inertial one.
Characteristics of resistance:- Similar amount of current passed by each resistance i.e. I = I1 = I2 = I3 = I4 ........ The sum of potential difference across individual res
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