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What is difference between Electrostatic force and nuclear force

Electrostatic force: Electrostatic force acts between charged particles only. Electrostatic force is a long range force. A proton can interact with all the protons within the nucleus through electrostatic force. Electrostatic force is a weak force. Nuclear force: Nuclear force acts between the nucleons and it is independent of the charge. Nuclear force is short range force. A nuleon can ...

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Why are some lines in the hydrogen spectrum brighter than others?

In hydrogen spectrum,some spectral lines are brighter than others depending upon their energy level.These bright lines show that electrons have jumped from higher energy level to lower energy level.When electron jumps from some higher orbit,the energy released in the from of photon will be greater,and we get a brighter line.Thus in hydrogen spectrum some lines are brighter than others.

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Is an electron a particle or a wave?

In 1924,de Broglie proposed that particle acts as a wave and wave acts as a particle. Davisson and Germer experimentally confirmed the wave nature of electron.They showed that electrons are diffracted from metallic crystal in the same manner as x-rays and other wave.Hence electrons show wave like properties.J.J Thomson while measuring e/m of electron showed that electron is a particle.Thus ...

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Why is wave nature of matter not more apparent in our daily observations?

Since,the de-Broglie wavelength is given by the relation λ = h/mv As the value of Plank’s constant is very small,so the wavelength associated with ordinary object is so small and is difficult to observe.In our daily observations we deal with the objects having larger mass and smaller velocity,that is why the wave nature of such objects is not more apparent ...

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What is difference between photon and electron

Photon: A photon has no rest mass because it cannot be at rest with respect to an observer. A photon moves with the velocity of light. A photon is charge less particle. Momentum of the photon with frequency ν is: P=hν/c Electron: An electron has mass and may be at rest. An electron cannot move the velocity of light. An electron ...

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Does a photon have a de Broglie wavelength?

Yes a photon has de Broglie wavelength.In 1924,Louis de Broglie proposed that a particle must also act like wave,in silmilar way,wave behave like particles. In de Broglie hypothesis an electromagnetic wave is the de-Broglie wave for a photon moving with speed c.According to de-Broglie ,the wavelength of the photon is given by the relation: λ = h/p Where P is ...

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What are X-rays?

What are X rays made of: X-rays are the electromagnetic waves which are emitted by the atoms of those metals which have large atomic number,large number of protons in their nuclei so that the pull of the nuclei on their electrons is very large.When an electron of K or L shell of such an atom is displaced from these shells ...

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What is difference between free and forced oscillations

Free Oscillations: A body is said to be executing free vibrations when it oscillates without the interference of an external force.For example,when simple pendulum is slightly displaced from its mean position vibrates freely with its natural frequency that depends only upon length of pendulum. Forced Oscillations: If an oscillating system is subjected to an external periodic force,then forced vibrations will ...

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Acceleration due to gravity formula and problems

What is gravitational acceleration? Acceleration of a freely falling bodies is called gravitational acceleration.The value of gravitational acceleration is 10 ms-².   Why value of g varies with altitude? Above formula shows that the value of acceleration due to gravity g depends on the radius of the earth at its surface.The value of g is inversely  proportional to the square ...

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What is the law of conservation of enegy

What does law of conservation of energy mean? According to law of conservation of energy:”Energy can neither be created nor is it destroyed.It can only be transformed from one form to another.A loss in one form of energy is accompanied by an equal increase in the other forms of energy.The total energy remains constant.” According to Einstein’s mass energy relation: ...

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