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When rays are incident on a boundary among medium, a section of incident waves goes back into the initial medium whereas the remaining is sectionaly absorbed and sectionaly transmi
Light is quantized. Photons are light quanta. It has zero REST mass. Therefore, it always travels at maximum speed permitted by relativity.
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A pendulum which is suspended from the ceiling of a railroad car is observed to hang at an angle of 10 degrees to the right of vertical. Which of the following answers could expla
Inductors are used extensively in analogue circuits and signal processing. Inductor in conjunction with capacitors and other components form tuned circuits which can emphasize or f
What do you mean by normal adjustment of a telescope? In What way it is better? What is the need of erecting lens in a terrestrial telescope? What do you mean by its magnific
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a) It is a sort of disturbance which goes by a medium. b) Material phase is necessary for the propagation of mechanical waves. c) When a wave motion goes by a phase, molecule
For this circuit which of the subsequent shows a correct way to connect a voltmeter to measure the voltage across R2? Answer: An perfect voltmeter has infinite resis
How is a wave front dissimilar from a ray ? Draw the geometrical, shape of the wave fronts when (i) light diverges from a point source, and (ii) light emerges out of a convex le
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