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What are the different types of nuclear reactions?

Nuclear reactions Nuclear fission Nuclear fusion Nuclear reactor Nuclear Reaction definition While studying radioactivity,we have seen that an α-particle is emitted from radium-226 and radon-222 is obtained. This nuclear is change is represented by the following equation: Such an equation represents a nuclear reaction. Above mentioned nuclear reaction takes place on its own accord. However, it was Rutherford who, first of ...

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Nuclear reactor:Definition,types and components

What is nuclear reactor?How does it works ? In a nuclear power station the reactor plays the same part as does furnace in a thermal power station. In a furnace, coil or oil is burnt to produce heat, while in a reactor fission reaction produces heat. When fission takes place in the atom of uranium or another heavy atom, then ...

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Atmospheric pressure at sea level:Definition,formula & applications

Atmospheric Pressure The Earth is surrounded by a cover of air called atmosphere. It extends to a few hundred kilometers above sea level. Just as certain sea creatures live at the bottom of ocean, we live at the bottom of a huge ocean of air. Air is a mixture of gases. The density of air in the atmosphere is not ...

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Pascal’s principle (law): formula,applications & examples in real life

What is Pascal’s Law and how do we use it? An external force applied on the surface of a liquid increases the liquid pressure at the surface of the liquid. This increase in liquid pressure in transmitted equally in all directions and to the walls of the container in which it is filled. This result is called Pascal’s law which ...

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Total internal reflection examples and applications

Total internal reflection

What is total internal reflection? When a ray of light travelling in denser medium enters into a rarer medium, it bends away from the normal. If the angle of incidence ‘i’ increases’ the angle of refraction ‘r’ also increases. For a particular value of the angle of incidence, the angle of refraction becomes 90°. The angle of incidence, that cause ...

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Difference between forward and reverse biasing of semiconductor diode?

Forward Biasing definition The bias a diode,you apply a dc voltage across it. Forward bias is the condition that allows current through the pn  junction. A dc voltage source connected by conductive material (contacts and wire) across a diode in the direction to produce forward bias. This external bias voltage is designed as V BIAS. The resistor limits the forward current to a ...

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What is difference between step up and step down transformer?

Step up transformer: If (Ns greater than NP) and (Vs is greater Vp) such a transformer in which voltage across secondary is greater than the primary voltage is called a step up transformer.A step up transformer has more turns in its secondary winding than its primary winding and is used to increase the ac voltage. The turns ratio for a step up ...

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what is Difference between induced emf and induced current?

  Induced EMF and Induced Current There are many ways to produced induced emf figure illustrated one of them. Consider a straight piece of wire of length l placed in the magnetic field of a permanent magnet. The wire is connected to a sensitive galvanometer. This forms a closed path or loop without any battery. In beginning when the loop  ...

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what is magnetic flux density?-definition & formula

Magnetic Flux (Φ) definition The group of force lines going from the north pole to the south pole of a magnet is called the magnetic flux, symbolized by Φ (the Greek letter phi). The number of lines of force in a magnetic field determines the value of the flux. The more lines of force, the greater the flux and the stronger the ...

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Magnetic hysteresis loop for ferromagnetic materials

Hysteresis Loop definition To investigate a ferromagnetic material, a bar of that material such as iron is placed in an alternating current solenoid. When the alternating current is at its positive peak value, its fully magnetises the specimen in one direction and when the current is at its negative peak, it fully magnetises it in opposite direction. Thus as the ...

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