{"id":2253,"date":"2023-05-02T07:59:16","date_gmt":"2023-05-02T07:59:16","guid":{"rendered":"https:\/\/vartmaaninstitutesirsa.com\/?page_id=2253"},"modified":"2024-03-14T15:00:31","modified_gmt":"2024-03-14T15:00:31","slug":"chapter-11-dual-nature-of-radiation-and-matter","status":"publish","type":"page","link":"https:\/\/vartmaaninstitutesirsa.com\/index.php\/chapter-11-dual-nature-of-radiation-and-matter\/","title":{"rendered":"Chapter 11 Dual Nature of Radiation and Matter"},"content":{"rendered":"

Chapter 11 Dual Nature of Radiation and Matter<\/h1>\n
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Unit-7 Dual Nature of Radiation and Matter : <\/span><\/u><\/strong>Dual nature of radiation, Photoelectric effect, Hertz and Lenard’s <\/span>observations; Einstein’s photoelectric equation-particle nature of light. Experimental study of photoelectric effect Matter waves-wave nature of particles, de-Broglie relation.<\/p>\n

1 Free Electron in a Metal:<\/span><\/u><\/strong><\/p>\n

In metals, the electrons in the outermost shell are loosely bounded. They move freely though out the lattice of the metals called free electronics. However these electrons remain confined in the lattice at ordinary condition. <\/span><\/p>\n

To remove these electrons from lattice we have to do some work, this work done is called work function as.<\/span><\/p>\n

The minimum amount of energy required to just eject out an electron from metal surface is called\u00a0<\/span><\/em>work function<\/span><\/u><\/em>\u00a0and it depends upon Nature of metal.\u00a0<\/span><\/em><\/p>\n

The work function is measured in electron volts\u00a0<\/span><\/p>\n

2 Electron Volt:<\/span><\/u><\/strong><\/p>\n

One electron volt is the amount of kinetic energy gained by an electron when it is accelerated though a potential difference of 1 volt.<\/span><\/em><\/p>\n

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