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Question

Some laws/processes are given in Column I. Match these with the physical phenomena given in Column II and
indicate your answer by darkening appropriate bubbles in the 4 4 matrix given in the ORS.

Solution
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The X-rays contains Kα,Kβ etc and these are the transitions between two atomic level . So A1
Also Hydrogen spectrum has quantized energy levels i.e En=136.6n2 and it contains so many transitions between two energy levels like-Lyman, Balmer etc. So A3
The photo electric effect is the emission of electron when photon incident on a metal. In beta minus decay, one neutron decay into a proton, an electron and an anti-neutrino. So, So B2,4
Mosley's law is an empirical law concerning the characteristic X-rays.So C1
The Einstein's photoelectric equation is hν=KEmaxhν0. So D2

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