eduPhysics

Étiquette : UNDERGRADUATE PHYSICS

  • DAVISSON AND GERMER EXPERIMENT & De-BROGLIE’S RELATION/PHYSICS

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    Rajansmoorthy
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    DAVISSON AND GERMER EXPERIMENT: Davisson and Germer terminated a finely collimated light emission (beam of electrons) at the essence of the crystalline nickel target. The angular dependence of the reflected electron intensity as estimated to have a similar diffraction pattern  as those anticipated by Bragg for X- ray beams. The sped up voltage is fluctuated(varied),…

  • HUYGENS WAVE THEORY- LAWS OF REFRACTION

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    Rajansmoorthy
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    WAVE THEORY: Christian Huygen, suggested the wave theory of light. Thomas Young, gave strong support to the wave theory of Christian Huygen. Fresnel, who showed that light is a transverse wave. Maxwell, on the basis of mathematical theory of magnetism showed that light is electromagnetic in nature. REFRACTION: Refraction is the phenomenon of bending of…

  • INTERFERENCE OF LIGHT/PHYSICS

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    Rajansmoorthy
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    INTERFERENCE OF LIGHT: The phenomenon by which intensity is redistributed when two light waves from two coherent sources superpose each other. *INTERFERENCE OF LIGHT  is an example for the Wave nature of light. *CONSTRUCTIVE : When the two waves are in phase.  *DESTRUCTIVE: When the to waves are out of phase. COHERENT SOURCES: S1 and…

  • PHOTOELECTRIC EFFECT

    PHOTOELECTRIC EFFECT

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    Rajansmoorthy
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    The peculiarity by which electrons are transmitted from a metal surface, when adequately high frequency electromagnetic radiations are permitted to incident on it. MAIN PARTS: Vacuum tube transparent to ultraviolet light. PHOTONS: Light beam is a discrete energy packets. PHOTOELECTRIC EFFECT:- EXPLANATION #   Photoelectric effect is the consequence of connection of two particles. One is…

  • NEET PHYSICS-QUESTION ANSWER & SOLUTION (7)

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    Rajansmoorthy
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    QUESTION-1 The wave nature of  electrons was experimentally verified by  [A]   Hertz                                         [B]    Einstein  [C]   Davisson and Germer             [D]   de Broglie ANSWER :                                                                                   ANSWER:[C] SOLUTION: From de Broglie hypothesis,the wavelength associated with an electron beam accelerated through 54 V should be 1.66 X 10-10 m. The tentatively estimated wavelength is near that assessed…