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Using Bohr’s Theory of hydrogen atom, obtain an expression for the velocity of an electron in orbit…

Physics20235 marksDerivation
(a)[3.0]
Using Bohr’s Theory of hydrogen atom, obtain an expression for the velocity of an electron in $n^{\text{th}}$ orbit of an atom.
(b)[2.0]
What is meant by “binding energy per nucleon” of a nucleus? State its physical significance.

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Atoms

From ISC 2023 Physics Paper 1, question 19(ii).