Answer available
Class 12 · Physics · Atoms and Nuclei
State two limitations of Bohr's model of the atom.
3 marksMediumShort answer
Class 12 · ICSE · Physics
Atoms and Nuclei
Rutherford's and Bohr's models, the hydrogen spectrum, mass defect, binding energy, radioactivity, fission and fusion.
- Questions
- 6
- PYQs
- 0
- Topics
- 0
Syllabus mapping: ISC syllabus (CISCE)
Questions
6 questions in this chapter.
- Answer available
Class 12 · Physics · Atoms and Nuclei
Define mass defect and binding energy, and explain why the binding energy per nucleon curve peaks near iron.
3 marksMediumShort answer
- Answer available
Class 12 · Physics · Atoms and Nuclei
Find the wavelength of the radiation emitted when an electron in a hydrogen atom falls from the third orbit to the second. Take the Rydberg constant as 1.097 × 107 m−1.
3 marksMediumNumerical
- Answer available
Class 12 · Physics · Atoms and Nuclei
The half-life of a radioactive nuclide is 4 days. What fraction of a sample remains after 16 days, and what is its decay constant?
3 marksMediumNumerical
- Answer available
Class 12 · Physics · Atoms and Nuclei
State the postulates of Bohr's model of the atom.
3 marksMediumShort answer
- Answer available
Class 12 · Physics · Atoms and Nuclei
Calculate the energy of an electron in the second orbit of a hydrogen atom.
3 marksMediumNumerical