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Illustrate a labelled diagram of Hertz's experimental set-up to produce electromagnetic waves. Describe the generation of- electromagnetic waves using this set-up.
Q. What is Einstein's photoelectric equation? Explain the laws of photoelectric effect with the help of this equation. Photoelectric Effect : The emission of electron from
what make flashlight suddenly become dim or bright when you shake it?
Intensities of an ordinary light and laser light The intensity (I) of a wave is the energy per unit time flowing through a unit normal area. The light from an ordinary light so
An equilateral triangle is inscribed in a circle of radius 2 cm if P lies inside the triangle then the minimum sum of distances of P from the sides of the triangle is? Ans
What is Centrifugal Force? Centrifugal force is the force that is equivalent in magnitude but opposite in direction to the centripetal force, which is the force directed toward
when a soft iron piece is buried under the surface of earth in the north south direction why the iron piece show properties of a magnet
The area element that seems in the integral is a vector. Area like an amount of coverage would appear to be a scalar quantity. What is the way of the area element ? Ans
maximum 20 mA current can flow through a zener diode.if zener voltage 6V how much resistance will have to be applied in series with the zener diode for 9V supply? calculate load cu
Inertia: the resistance an object has to a alter in its state of motion. Newton's first law of motion declares that force is NOT required to keep an object in motion. Slide
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