(not consider electro static force among the electrons), Orbit radius of the electron around the nucleus, Energy of the electron in the nth orbit of hydrogen atom, Angular momentum of electron in any orbit is integral multiple of h/2ð, No. ... Splitting of a heavy nucleus into lighter elements.This process is made use of in Nuclear reactor & Atom bomb: Nuclear fusion Fusing: 10-15 femto f 10-12 pico p 10-9 nano n 10-6 micro m 10-3 milli m 10-2 centi c 10-1 deci d 103 kilo k 106 mega M 109 giga G 1012 tera T 1015 peta P Units: MKSA Distance m Mass Kg Time seconds Current Ampere Charge Coulomb A.s Nuclear density =mass of nucleus/ volume of nucleus The volume of the nucleus is directly proportional to the mass no. �-9@B�HH����A�)"�3z}0 -� h�bbd``b`6! This topic also sheds light on how different atoms act differently concerning nuclei. of nucleons(protons + neutrons) in a nucleus A-Z, Splitting of a heavy nucleus into lighter elements.This process is made use of in Nuclear reactor & Atom bomb, Fusing of lighter nuclei to form a heavy nucleus.This process takes place in Stars & Hydrogen bomb. Nuclear Equation – shows the radioactive decomposition of an element . N + C → 14 6 14 7 0-1. e • Nuclear Forces – strong nuclear force holds neutrons and protons together to form a nucleus (counters electromagnetic repulsion). Physics 418 E XAMPLE 12.1 The magnitude of this force is 2 0 1 (2 )( ) 4 eZe F r (12.1) where r is the distance between the α-particle and the nucleus. Candidates who are ambitious to qualify the Class 12 with good score can check this article for Notes. %%EOF Nomenclature and common units Power Prefix Abbrev. ��x�OF:���d���dd�Vò�h0���>d�;� �[�����^WU9)}WGC�V+}wxx��A?���3�w�0R��JuV�[�qS��"�7��w�������̹��犣s���gp��P�j�\���C�WW�=����٫Ǫ�^2��7*�δ'd �YZ�����x(����>���(( �1,��q9��P��a)�!�X@ Ue�N�E�#��Y��{8��p �1��Ճ������b��3����6W��� CBSE Syllabus Class 12 Maths Physics Chemistry ... CBSE Syllabus Class 11 Mathematics biology chemistry ... CBSE Syllabus Class 10 Maths Science Hindi English ... CBSE Syllabus Class 9 Mathematics Science English Hindi ... Revised Syllabus for Class 12 Mathematics, Thomson’s model of atom- Every atom consists of charged sphere in which electrons are embedded like seeds in water melon, Distance of closest approach of the alpha particle in the α particle scattering experiment, Limitations-applicable only for hydrogen like atoms & couldn’t explain the splitting of spectral lines. We will also introduce a mobile app for viewing all the notes on mobile. Download Nuclear Physics CBSE Class 12 Notes PDF. Atoms And Nuclei Physics Class 12 Notes Pdf Download ☞ Class 12 Solved Question paper 2020 ☞ Class 10 Solved Question paper 2020. Physics Notes for Class 12 Chapter 13 Nuclei Nucleus ... Nuclear Size The radius of the nucleus R ∝ A1/3 ⇒ R = R o A1/3 where, R o = 1.1 * 10-15 m is an empirical constant. This is possible only when you have the best CBSE Class 12 Physics study material and a smart preparation plan. Commonly used fissile nuclei : U-235 and Pu-239. Click here iii) The atomic nucleus is surrounded by certain number of electrons. couldn’t explain the stability of the nucleus & the emission of line spectra of fixed frequencies. hޤ��r�6������f:� �3�H��8��q}AK�Ę"er�PS����P8-���0���{A�x��b^F���y,b��^Pʽ0F�6��m��J"�2�����1f/�9�`�0b� �7��ׯaP�e5Z�cE�Z|�=�q��� Mass defect Mass of A nucleus is always less than the sum of masses of nucleons in it. A. if the no. of the nucleus is doubled, volume is also double. NCERT Solution and Assignment will be uploaded soon. It is the working principle behind a nuclear reactor and fission bomb. Kilogram is not a very convenient unit to measure such small quantities. This difference of mass is called a mass defect. endstream endobj startxref NCERT Class 12 Physics Books are provided in PDF form so that students can access it at any time anywhere. We will keep adding updated notes, past papers, guess papers and other materials with time. h�b```f``2���� ���'ZY8@"Fl+��83O�l)���*|��j�4��+�p�9d����ڃ,Xlt`2a���Pչj嬎U+WVN� 4�q�b��Ɲ�� of nucleus, hence the entire nucleuses have nearly the same density. 172 0 obj <>stream 0 Please send your queries to ncerthelp@gmail.com you can aslo visit our facebook page to get quick help. also associated nuclear phenomena such as radioactivity, fission and fusion. Always remain free energy is that energy which binds nucleon inside the nucleus & the emission line! 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