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Q. Explain what is light?
Light is certainly electromagnetic radiation but the expression electromagnetic radiation is by no means an explanation of what light is. Light is a wave that which is "waving" (varying in a repetitive fashion in both time and space) is an electric field and a magnetic field. Light isn't matter. An electric field isn't matter. A magnetic field isn't matter. Light contains of both electric and magnetic fields that vary in both time and space in a regular repetitive matter. Since electric and magnetic fields aren't matter light can't be matter. Since light isn't matter, it can't consist of and doesn't consist of charged particles. Vacillate charged particles do cause light but they themselves are not light.
What are synthetic rubbers? Give the preparation and structure of any two synthetic rubbers.
Explain the term modulation. Name three dissimilar types of modulation used for a message signal using a sinusoidal continuous carrier wave. Describe the meaning of any one of thes
Power factor improvement: The low power factor is because of the fact that most of the power loads are inductive and thus take lagging currents.
In a particular region there is a uniform current density of 18 A/m 2 in the positive direction. What is the value of fB·ds when that line integral is calculated along the three s
..Proof of varignon''s theorem
Graphs of current against voltage for two resistors P and Q are shown in Figure. Determine the value of every resistor.
how can we conclude whether at some time interference will take place or not with the help of the concept of temporal coherence?
Q. The image of a small electric bulb fixed on the wall of a room is to be obtained on the opposite wall ma way by means of a large convex lens. What is the maximum possible focal
Q. State any three laws of photo electric emission? (i) For a specified photo sensitive material there is a minimum frequency called the threshold frequency below which emissio
Kirchhoff's law of radiation (G.R. Kirchhoff): The emissivity of a body is equivalent to its absorptance at the simialr temperature. Kirchhoff's laws (G.R. Kirchhoff)
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