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Author Archives: admin

Newton’s second law definition and formula

  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 the net force is act on a body? Newton perceived that velocity of a body increased or decreased by applying ...

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Potential energy examples in everyday life

Energy due to the position is called potential energy. It is represented as P.E.It is a scalar quantity.Its unit is joule.P.E is the type of mechanical energy, which is defined as: Energy due to motion and position. Now! Before we discuss the explanation of P.E, we give some mechanical energy examples. Examples of mechanical energy Moving wind when it turns ...

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coulomb’s and newton’s gravitational law: differences and similarities

Coulomb’s law Newton’s law of gravitation Comparison of Coulomb’s law and Newton’s law of gravitation The electrical force between two charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them:It is expressed The gravitational force between two masses is directly proportional to the product of their masses and inversely ...

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Simple pendulum formula and time period equation

  A simple pendulum also exhibits SHM. It consists of a small bob of mass ‘m’ suspended from a light string of length ‘L’ fixed at its upper end.In the equilibrium position O,the net force on the bob is zero and the bob is stationary.Now if we bring the bob to extreme position A,the net force is not zero as ...

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difference between fresnel and fraunhofer diffraction in tabular form

what is Fresnel’s diffraction? Fresnel diffraction can be observed if the source of light and the screen at which diffraction pattern is formed are kept at finite distance from the diffracting obstacle.In this situation the wave fronts falling on the obstacle are not plane.Similarly the wave fronts leaving the obstacle are not plane. what is Fraunhofer diffraction? Fraunhofer diffraction can ...

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difference between astronomical telescope and galilean telescope

Comparison table :                   Astronomical telescope     Galilean telescope 1:In an astronomical telescope the eye piece is a convex lens. 1:In Galilean telescope the eye piece is concave lens. 2:It forms an inverted image. 2:It forms an erect image. 3:The length  of astronomical telescope is: L =f0   + fe   ...

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Difference between interference and diffraction of light

Interference of light The modification in the distribution of light energy due to superposition of two or more waves is called interference of light. Conditions for interference Light source should be monochromatic. Light source should be coherent mean they should not be independent but should be subsidiary source and derived from a single source. The light source should be narrow ...

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uses of laser in daily life

List of uses of laser and applications in the field of medicine, industry, and agriculture The intense heat produced in a small area by a laser beam is also used for welding and matching metals and for drilling tiny holes in the hard material. The precise straightness of a laser beam is also useful to surveyors for lining up equipment ...

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How can you determine the polarity of unlabeled magnet?

The polarity of an unlabelled magnet is determined by following methods. First method: Suspend the magnet freely with the help of a thread so that it can oscillate freely.When magnet comes to rest ,one end always points towards the northern end of the earth.This end of magnet is thus called the North pole.Similarly,the other end of the magnet pointing towards ...

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do electron tend to go to regions of high potential or low potential?

Electrons are negatively charged particles.When placed in an electric field ,negatively charged plate will repel them while positively charged plate will attract them.So,the electrons will move from negatively charged plate to positively charged plate.Since positively charged plate is at higher potential,while negatively charged plate is at lower potential.Therefore electrons tend to go from region of lower potential to a region ...

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