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MHT CET Physics question

PhysicsAtomsMHT CET

In the Bohr model of a hydrogen atom, the centripetal force is furnished by the coulomb attraction between the proton and the electron. If is the radius of the ground state orbit, is mass, is the charge on the electron and is the vacuum permittivity, the speed of the electron is

Answer: (C)

Solution

gives

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Question ID VK-084665