Atoms And Nuclei Question 56

Question: In the Bohr model of a hydrogen atom, the centripetal force is furnished by the coulomb attraction between the proton and the electron. If a0 is the radius of the ground state orbit, m is the mass, e is the charge on the electron and ε0 is the vacuum permittivity, the speed of the electron is [CBSE PMT 1998]

Options:

A) 0

B) 7N14

C) 14

D) 4πε0a0me

Show Answer

Answer:

Correct Answer: C

Solution:

mv2a0=14πε0e2a02v=e4πε0a0m



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