Category: Physics

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Physics

PN Junction Diodes

Science > Physics > Semiconductors > PN Junction Diodes When a crystal of semiconductor is doped such that half the portion of the crystal is doped with a trivalent impurity and the other half is doped with a pentavalent impurity, then the junction (boundary) formed is called a PN junction. The crystal itself is called […]

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Physics

The Vibration of Vertical Spring

Science > Physics > Oscillations: Simple Harmonic Motion > The Vibration of Vertical Spring In this article, we shall study the vibration of vertical spring, when a mass is attached to it. Oscillation of Mass Due to a Vertical Spring: Let us consider light and elastic spring of length L suspended vertically from a rigid […]

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Physics

Numerical Problems on a Simple Pendulum

In this article, we shall study to solve numerical problems based on simple pendulum. Science > Physics > Oscillations: Simple Harmonic Motion > Numerical Problems on a Simple Pendulum Example – 01:  The period of oscillation of a simple pendulum is 1.2 sec.in a place where g= 9.8m/s2. How long is the bob below the […]

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Physics

Theory of Simple Pendulum

Science > Physics > Oscillations: Simple Harmonic Motion > Theory of Simple Pendulum In this article, we shall study a concept of a simple pendulum, its characteristics. We shall also derive an expression for the period of a simple pendulum. A simple pendulum consists of a point mass suspended from a perfectly rigid support by […]

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Physics

Composition of Two S.H.M.s

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Science > Physics > Oscillations: Simple Harmonic Motion > Composition of Two SHM In this article, we shall study the composition of two SHM. Sometimes particle is acted upon by two or more linear SHMs. In such a case, the resultant motion of the body depends on the periods, paths and the relative phase angles […]

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Physics

Numerical Problems on Energy of Particle Performing S.H.M.

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Science > Physics > Oscillations: Simple Harmonic Motion > Numerical Problems on Energy of Particle Performing S.H.M. In this article, we shall study to solve numerical problems to calculate potential energy, kinetic energy, and total energy of particle performing S.H.M. Example – 01: A particle of mass 10 g performs S.H. M. of amplitude 10 […]

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Physics

The Energy of Particle Performing S.H.M.

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Science > Physics > Oscillations: Simple Harmonic Motion > The Energy of Particle Performing S.H.M. In this article, we shall study the concept and expression of the total energy of a particle performing S.H.M. and its constituents. Kintetic Energy of Particle Performing Linear S.H.M.: Consider a particle of mass ‘m’ which is performing linear S.H.M. […]

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Physics

Hydrogen Spectrum

Science > Physics > Atoms, Molecule, and Nuclei > Hydrogen Spectrum The origin of spectral lines in the hydrogen atom (Hydrogen Spectrum) can be explained on the basis of Bohr’s theory. The hydrogen atom is said to be stable when the electron present in it revolves around the nucleus in the first orbit having the […]

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Physics

Bohr’s Model of an Atom

Science > Physics > Atoms, Molecule, and Nuclei > Bohr’s Model of an Atom In the last article, we have studied Rutherford’s model of an atom, its merits, and demerits. In this article, we shall study Bohr’s Model of an atom, its merits, and demerits. To overcome the limitations of Rutherford’s model of an atom, […]

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Physics

Rutherford’s Model of an Atom

Science > Physics > Atoms, Molecule, and Nuclei > Rutherford’s Model of an Atom In this article, we shall study Dalton’s atomic theory, Rutherford’s model of an atom, its merits, and demerits. Dalton’s Atomic Theory: This theory was proposed by English chemist John Dalton in 1808. The main propositions of the theory are as follows: […]