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Beam of photons: EM radiation or light 1) After imparting h energy to the electron where did the photon go? 2) Are momentum/Energy conserved in the process? And if they are then explain how? 3) What actually are free electrons and why do they exist? 4) What exactly is a photon? I mean what are the dimensions of the photon? is it a real particle? Can we picturise it? 5) How many packets of energy are contained in a ray of light from sun to earth? 6) If an electron is moving in space with some velocity 'v', what type of wave will be created by its motion? 7) Why the concept of intensity differ in wave and particle nature of EM radiation or light? 8) Is there energy associated with a matter wave? (de Broglie Wavelength) 9) How can you show energy is conserved in photoelectric effect? 10) How can there be momentum without mass? wrt. photon 11) The particle nature of life must effect our surroundings, for eg. the eye lens through which we see life, the walls, the rocks etc. Do light degredate these materials or it has no effect on them? Why these phenomenons are commonly not observed?


Beam of photons: EM radiation or light

1) After imparting h energy to the electron where did the photon go?

2) Are momentum/Energy conserved in the process? And if they are  then explain how?

3) What actually are free electrons and why do they exist?

4) What exactly is a photon? I mean what are the dimensions of the photon? is it a real particle? Can we picturise it?

5) How many packets of energy are contained in a ray of light from sun to earth?

6) If an electron is moving in space with some velocity 'v', what type of wave will be created by its motion?

7) Why the concept of intensity differ in wave and particle nature of EM radiation or light?

8) Is there energy associated with a matter wave? (de Broglie Wavelength)

9) How can you show energy is conserved in photoelectric effect?

10) How can there be momentum without mass? wrt. photon

11) The particle nature of life must effect our surroundings, for eg. the eye lens through which we see life, the walls, the rocks etc. Do light degredate these materials or it has no effect on them? Why these phenomenons are commonly not observed? 


Grade:upto college level

1 Answers

shubham sharda
361 Points
5 years ago
Photon is a quantum of energy. After being absorbed by electron it disappears because its energy is transferred to electron. Free electrons exists in metals. these are not bound to any atom and are free to move around in the metal.YEs, Photon is a real particle. everthing has particle like properties and wave like properties. The no. of photons in a ray depend upon the energy of the ray and its frequency, it is not fixed.

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