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Q. Illustrate about Optical Memories?
In 1983 one of the most successful consumer products of all times was introduced which is compact disk (CD) digital audio system. This CD was a non-erasable disk which could store more than 60 minutes of audio information on one side. Huge commercial success of this CD enabled development of low-cost optical-disk storage technology that has revolutionised computer data storage. Some optical-disk systems has been introduced. We briefly review each one of these.
A medium is characterised by relative permittivity ε r =45 and relative permeability μ r =5. Determine the speed of e-m wave in the refractive and medium index of the medium.
De?ne reduction potential and oxidation potential. Reduction potential of a metal is the measure of tendency of a metallic electrode to gain electrons when it is in contact wit
Five volts are applied across the plates of a parallel plate capacitor. The distance of separation of the plates is .02 meters. What is the magnitude of the electric field i
Emission spectrum of hidrogen is different from emission spectrum of sodium.Why? Ans) Because, in sodium atom there are already many other electrons present in the atom aother than
What is the definition of fringes
Q. An X-ray diffraction of a crystal gave a closest line at an angle of 6o27'. If the wavelength of X-ray is 0.58Ao, find the distance between the two cleavage planes. 2d Sinθ
Two grating A and B have the same width of the ruled surface but A has greater number of lines. Giving reasons compare in two cases (a) Intensity (b) Width of principal maxim
how does a Vernier caliper work
How much work has to be completed in assembling three charged particles q1= 2 micro coulomb, q2= 3 micro coulomb and q3= 4 micro coulomb at the vertices of a equilateral triangle o
Methods of Demagnetization: 1. A magnet loss it's magnetic properly when it is heated strongly. 2. Practically a magnet can be demagnetized by hammering when it is placed in
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