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MHT CET Physics question

PhysicsAtomsMHT CET

In the Bohr's 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, m is the mass, e is the charge on electron and is the permittivity of free space, the speed of the electron is

Answer: (C)

Solution

gives ; (a) lacks the

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Question ID VK-084825