Webb19 feb. 2024 · 12th class physics guess paper 2024 1. Why are heavy nuclei unstable? 2. A particle which produces more ionization is less penetrating. Why? 3. What factors make a fusion reaction difficult to achieve? 4. Give two uses of radioactivity in medicine. 5. What is meant by background radiations? Give its sources. 6. Webb12.The lowest state of the atom is called the ground state, this state has lowest energy. The energy of this state is -13.6 eV. Therefore, the minimum energy required to free the electron from the ground state of the hydrogen atom is -13.6 eV. 13. (i) Emission Spectrum Hydrogen spectrum consists of discrete bright lines a dark background and it ...
Class 12 Physics (India) Science Khan Academy
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Important Questions for Class 12 Physics with Answers - Learn CB…
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