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Minimum Length Of Plane Mirror To See Full Image Minimum Length Of Plane Mirror To See Full Image :- Let’s consider a boy of height H standing in front of a vertical plane mirror. The goal is to see the full image of the boy, from head to toe. For this to happen, rays…
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Potential Energy Of A System Of Charges Potential Energy Of A System Of Charges :- The electrostatic potential energy of a system of charges is the work required to assemble the system by bringing each charge in from infinity—where the electric field is zero—to its final position, against the forces of electrostatic attraction or…
Potential Energy Of A System Of Two Point Charges Potential Energy Of A System Of Two Point Charges :- The potential energy of a system of two point charges can be defined as the work done in bringing them from infinity to the given separation. Below figure shows two +ve charges q1 and q2 separated…
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Electric Potential Due To Multiple Charges Electric Potential Due To Multiple Charges :- Electric potential is a scalar quantity that describes the potential energy per unit charge at a point in an electric field. When dealing with multiple point charges, the total electric potential at a given point in space is the algebraic sum…
Electric Potential Due To A Point Charge Electric Potential Due To A Point Charge :- Let us consider a point charge +Q placed at a fixed point O in space. We want to calculate the electric potential V at a point a P located at a distance r from this charge. By definition, electric potential…
Electrostatic Forces Are Conservative Electrostatic Forces Are Conservative :- Conservative force are those force in which work done by the force or against the force does not depend on the path followed but only depends on the initial and final positions. In other words the work done in closed path is zero. To prove…
Electrostatic Potential Electrostatic Potential :- Before discussing electrostatic potential at a point, first we define electric potential difference because only differences in potential can be measured directly, not the absolute potential itself. The reason for that is : Electric Potential, just like gravitational potential, is relative. We need a reference point (usually taken at…
Electrostatic Potential Energy Electrostatic Potential Energy :- Just like gravitational potential energy of a mass in a gravitational field, we can derive an expression for electrostatic potential energy of a charge in an electric field. Let us assume that a charge +Q is placed at the origin which produces electric filed . Let a…
the de broglie wavelength of a photon is twice the de broglie wavelength of an electron Question :- the de broglie wavelength of a photon is twice the de broglie wavelength of an electron. The speed of the electron is ve = c/100. Then – Solution :- According to question, λp = 2λe ,…
Intensity of Electromagnetic Waves Intensity of Electromagnetic Waves :- The intensity of electromagnetic (EM) waves at a point refers to the average amount of energy crossing per second per unit area normally around that point during the propagation of EM wave. It is a measure of the wave’s power and is proportional to the…