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__________ of the following is not a fundamental postulate of Bohr’s theory of hydrogen atom. (The total energy of the electron in one of it allowed orbit remains constant as long as it remains in the same orbit, An electron can not revolve in an arbitrary orbit. Only those orbits are possible for which the angular momentum of the electron about the nucleus is an integral multiple of h/2p, The electron can move in all possible orbits, An atom radiates energy only when an electron jumps from an allowed orbit of higher energy En to one of the lower energy Ep)

Asked by Narendra Kumar Sharma 19/02/2015 Last Modified 19/02/2015

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Solution: m1 = 4N × 10^-7, m2 = 4N × 1.5 × 10^-4; r = 10 cm. F= (m1 m2)/( 4 pi mue0 r^2) = (4N 10^-7 x 4N 10^^-4)/(4N x 4N x 10^-7(10 x10^-2)^2 =15N

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