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JEE Advanced 2023 Paper 1 Solutions

Section: Physics

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Question : 8 of 51

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A Hydrogen-like atom has atomic number Z. Photons emitted in the electronic transitions from level n=4 to level n=3 in these atoms are used to perform photoelectric effect experiment on a target metal. The maximum kinetic energy of the photoelectrons generated is 1.95‌eV. If the photoelectric threshold wavelength for the target metal is 310‌nm, the value of Z is____________
[Given hc=1240‌eV-nm and Rhc=13.6‌eV, where R is the Rydberg constant, h is the Planck's constant and c is the speed of light in vacuum]

[JEE Adv 2023 P1]

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