. Which is the best book for studying first-year engineering physics? (a) The fissionable material should be larger than a certain minimum size. Jeemain.guru is trying to help the students who cannot afford buying books is our aim. Avadhanulu M. N. and P.G. Revision Notes on Modern Physics Atomic Physics. Emission of α- particle results in a decrease in its atomic number by 2 and a decrease in its atomic weight by 4. 4 All objects in free fall will fall with the same acceleration, that is the acceleration caused by gravity and it is given the symbol g. A precise value would be g= 9.81 m s2 but for most purposes we will make the math a bit easier and use g= 10 m Preparing for entrance exams? All the diagrams, formulas and derivations are given in these notes to help the students acquaint with all the important chapters and concepts. Photo electric effect:- Photo-electric effect is the phenomenon of emission of electrons from the surfaces of certain substances, mainly metals, when light of shorter wavelength is incident upon them. Your email address will not be published. Structural Organisation in Plants and Animals, French Southern and Antarctic Lands (+262), United state Miscellaneous Pacific Islands (+1), Deformable Bodies and Elastic Deformation, Electromagnetic Induction and Alternating Current. (c) While revolving permitted orbit an electron possesses angular momentum L (= mvr) which is an integral multiple of h/2π. Resnick, Walker and Halliday, Fundamentals of Physics, John Willey and Sons. (a) Presence of current for zero value potential indicates that the electrons are ejected from the surface of emitter with some energy. Refund Policy, Register and Get Free access of Online Study Material, Please choose a valid
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