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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.
derive an expression for the variation of g with altitude or depth
A monochromatic parallel beam of light is incident on a single slit. Graphically show the intensity distribution among the secondary maxima and principle maxima in diffracted beam.
What is the resistance of a coil of aluminium wire The resistance of a coil of aluminium wire at 18 ? C is 200?. The temperature of the wire is increased and the resistance
a) What force is needed to give amass of 20kg an acceleration of 30m/s 2 ? b) Find the accelerating force when a car having a mass of 1.7Mg enhances its speed with a constant a
A spacecraft design similar to GEOSAT proposes to use passive gravity-gradient stabilization for pitch attitude control (motion about the y-axis). The satellite consists of a tip
A 10 kilogram mass rests on a horizontal frictionless surface. A horizontal force of 5 Newtons is applied to the mass. After the force has been applied for 1 second, the
what is meant by positive deviation of beer lambert''s low?
Illustrate which atomic model did Erwin Schrodinger create? Answer:- Schrödinger's wave equation was on the basis of Heisenberg uncertainty principal that the position and
A fishing line's lead sinker has a volume of 1.40 x 10 -5 m 3 . The density of lead is 1.2 x 10 4 kg/m 3 . What is the apparent weight of the sinker when immersed in freshwat
An athlete run a certain distance before taking a long jump. Why?
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