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Explain basic principle of holography
Holography is a new method of producing a 3D image of a 3Dobject. An ordinary photograph is only a 2D image of a 3D object. The photographic ?eld is resistive only to amplitude variation of the electromagnetic waves and it is not sensitive to point variations. So this photo does not give the phase information of the waves. In 1948, Dennis Gabor introduced a new method to record both amplitude and phase variation of the electromagnetic waves scattered from the object. When it is reproduced, we get a 3D image of 3D object. Hologram is a recorded inference pattern obtained by the object waves and the coherent reference wave
Constant Negative Velocity Observe in which the object below moves along with a constant velocity within the negative direction. The dot diagram displays in which each consecut
Q. How is a galvanometer converted into (a) an ammeter and (b) a voltmeter? A galvanometer is transformed into an ammeter by connecting a low resistance in parallel with it. Th
In terms of the wavelength of the pertinent light how thick must the layer of transparent optical coating on a transparent medium be in order to create maximum destructive interfer
A Surfer sits on his board waiting as waves go by to catch a ride back to shore. Assuming the waves can be modelled as a sine wave given by h (x,t) = 1.75 sin (0.03 Πx - 0.15 Πt) [
The velocity of a motor boat with respect to Still Water is 7 m/s and the velocity of water in river is 3 m/s. When the boat starts moving upstream, a float was dropped from it.
A copper rod which is 1 centimetre in diameter carries a current of 5 amps. The current is distributed uniformly throughout the rod. The magnetic field half way between the axis
Consider the 4-f system below where an object is placed at the input plane and is illuminated by a plane wave The object to the right is placed in the input plane where b
Consider a horizontal cylinder with L/D = large. Imagine this cylinder is filled with a liquid to different levels (consider cases where it is 10, 20, 50, 70, 90% full, note that l
Draw a circuit diagram of a common emitter amplifier by using n-p-n transistor. Show input and output voltages graphically. The current gain for common emitter amplifier is 59.
what are the advantages of surface tension
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