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Author Archives: admin

newton’s rings experiment with animation

Newton’s Ring: Newton’s rings is a process in which Circular bright and dark fringes obtained due to air film enclosed between a Plano convex lens and a glass plate. An air wedge film can be formed by placing a plano-convex lens on a flat glass plate.The thickness of film is zero where the lens and the plate are in contact ...

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Difference between impulse turbine and reaction turbine?

Comparison between Impulse turbine and a reaction turbine: Following are the some points of comparison between an impulse and reaction turbine. Impulse Turbines: In impulse turbine steam flows through nozzle and impinges in moving blades. The steam hits on the buckets with Kinetic energy. The steam pressure remains constant. Their relative velocity remains constant. Blades are symmetrical. Number of stages ...

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Difference between diesel and petrol engine

Diesel Engine: Diesel engine only draws air during suction stroke. The fuel is injected in the form of fine spray. Combustion of fuel takes place at constant pressure. The diesel engine are heavier and costlier. Starting of diesel engine is difficult due to high compression ratio. The maintenance cost of it is large. They are low speed engines. They are ...

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Discuss analogies and differences between Gauss’s law and ampere’s law.

Analogies between Gauss’s law and Ampere’s law: Gauss’s law says the electric flux through a closed surface is proportional to the charge within the surface.Ampere’s law says the line integral of B.ds around a close path is proportional to the current that passes through that path. In Gauss’s law,the imaginary and arbitrary closed surface is taken enclosing a charge.In ampere’s ...

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Discuss analogies and the differences between Coulomb’s law and the Biot- Savart’s law?

Similarities: Both the electric and magnetic field depends inversely on square of distance between the source and field point. Both electric field and magnetic field are proportional to the source strength namely charge and current element respectively. Both obey superposition principle. Differences: According to Coulomb’s law,the electrostatic force between two point charges is directly proportional to the product of their ...

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uses and applications of x rays waves in everyday life

Uses of gamma rays in everyday life 1:Radio Therapy X-rays kill the diseased tissues of the body.Hence they are used to λ cure intractable skin diseases,malignant tumours etc.If the affected part is superficial soft rays are applied and for deep seated organs hard rays are used. 2:Engineering Because of their high penetrating power they are used ti investigate the structure of ...

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Plasma physics and controlled fusion energy

Plasma physics definition “The branch of physics which deals with the study of the properties of plasma is known as plasma physics.” Plasma definition A highly ionised gas is regarded as a fourth state of matter called the plasma state.It is regarded as fourth state of matter since it is not solid,liquid or gas in usual sense. How plasma is ...

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Why resistivity of semiconductors decreases with temperature?

The solid materials having properties in between conductors and insulators are known as semiconductors. A semiconductor is a material which is neither a good conductor nor good insulator of electricity.Its resistivity lies in between conductors and insulators,which is 100 Ω cm.The energy gap between conduction and valence band is narrow for semiconductors with respect to insulators. With the rise in temperature ...

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Why does n-type semiconductors have so many electrons than holes?

The elements of group V are pentavalent such as arsenic (As) ,phosphorus (P),bismuth (Bi),and antimony (Sb).These have five electrons in their valence band.When one of these materials is added to semiconductor like Si,four of its valence electrons from four covalent bonds with neighboring Si atoms and the fifth electron becomes free.The numbers of free electrons is equal to the numbers ...

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In our body,are there more neutrons than protons?

Human body mainly contains water nearly 70 %.In all neutral atoms,the number of protons and electrons are equal.If you did have many more protons or electrons,yous body would become electrically charged,but normally ,the amount of protons and electrons are the same. Of course the human body contains many different elements,and some of these are of high atomic number.On the other ...

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