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Assuming that the incident radiation is capable of ejecting photo electrons from all the given metals, the lowest kinetic energy of the ejected photoelectron is observed with which of the given metals?
(a)
(b)
(c)
(d)

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Important Questions on Atomic Structure
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The ratio of de Broglie wave lengths of two particles, having mass ratio and kinetic energy ratio is

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If two particles and are moving with the same velocity, but wavelength of is found to be double than that of Which of the following statements are correct?

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On the basis of Bohr's model, the radius of the orbit is

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A subshell can accommodate maximum of

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If the energies of two light radiations and are and respectively, then their respective wavelengths and would be in the ratio

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If the work function for the photoelectron emission of a metal is , then the threshold wave length of the radiation needed for the ejection of the electron is approximately

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With increasing Principal Quantum number, the energy difference between adjacent energy levels in H-atom

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An element with mass number contains more neutrons as compared to protons. What is the symbol of that element?
