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Author Archives: admin

Difference between stable unstable and neutral equilibrium with examples

Types  of equilibrium in physics There are three states or types  of equilibrium in physics Stable equilibrium Unstable equilibrium Neutral equilibrium Stable equilibrium “A body is said to be in stable equilibrium if after a slight tilt it returns to its previous position.” Consider a book lying on the table.Tilt the book slightly about its one edge by lifting it ...

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difference between centre of mass and centre of gravity with examples

Centre of Mass “Centre of mass of a system is such a point where an applied force causes the system to move without rotation” It is observed that the centre of mass of a system moves as if its entire mass is confined at that point. A force applied at such a point in the body does not produce any ...

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Total internal reflection:conditions,uses and examples

Total Internal Reflection One of the qualities of any optically transparent material is the speed at which light travels within the material, i.e., it depends upon the refractive index n of the material. The index of refraction is merely the ratio of the speed of light c in vacuum to the speed of light v in that material.Expressed mathematically: n=c ...

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Diffraction grating formula and equation in physics

What is diffraction grating? “The diffraction grating is a useful device for analyzing light sources.It consists of a large number of equally spaced parallel slits.”Its working principle is based on the phenomenon of diffraction.The space between lines act as slits and these slits diffract the light waves thereby  producing a large number of beams which interfere in such a way ...

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what is the difference between p type and n type semiconductors?

Difference between n type and p type semiconductors? Depending on the type of doping material used ,extrinsic semiconductors can be further subdivided into two classes: N- type semiconductors P-type semiconductors N-type semiconductors: This type of semiconductor is obtained when a pentavalent material like antimony (Sb) is added to pure germanium crystal.fig Each antimony atom forms covalent bonds with the surrounding ...

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Difference between conductors and insulators with examples

Conductors A conductor is a material that easily conducts electrical current.Most metals are good conductors.The best conductors are single element materials,such as copper(Cu),silver(Ag),gold(Au),which are characterized by atoms with only one valence electron very loosely bound to the atom.These loosely bound valence electrons become free electrons.Therefore,in a conductive material the free electrons are valence electrons. In terms of energy bands ,it ...

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What is convection current?Definition,examples and applications

Radiation heat transfer conduction heat transfer Convection current definition The upward and downward movement of molecules of water or air is called a convection current. What is Atmospheric Convection? Atmospheric convection plays a fundamental role in determining the global climate patterns and in our daily weather variations.Gliders pilots and condors alike seek the convection thermals that ,rising from the warmer ...

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Newton’s third law of motion examples in daily life

Newton’s first law of motion Newton’s second law of motion Newton’s third law of motion Newton’s third law of motion explains the quantitatively that how forces affect motion.But question is that where these forces come from?We noticed during observations that a force on any object always exerted by another object. For examples: A horse pulls a cart ,a person walks ...

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Newton’s second law of motion formula and examples in daily life

Newton’s first law of motion Newton’s second law of motion Newton’s Third law of motion According to newton’s first law of motion “if no net force is acting on a body at rest,then the body remains at rest,or if the body is moving will continue to move.” But! What will happen if  net force is act on a body? Newton ...

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Potential energy formula and types with examples in everyday life

Potential energy definition Potential energy is defined as:“Energy due to position is called potential energy.” Explanation of potential energy When a diver jumps off a high  board into a swimming pool,he hits the water moving pretty fast,with a lot of kinetic energy.Where does that energy come from?The answer is that gravitational force (his weight) does work on the diver as ...

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