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JEE Advanced 2025 Paper 1 Online
MCQ (Single Correct Answer)
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List-I shows various functional dependencies of energy $(E)$ on the atomic number $(Z)$. Energies associated with certain phenomena are given in List-II.

Choose the option that describes the correct match between the entries in List-I to those in List-II.

List–I List–II
(P) $E \propto Z^2$ (1) energy of characteristic x-rays
(Q) $E \propto (Z - 1)^2$ (2) electrostatic part of the nuclear binding energy for stable nuclei with mass numbers in the range 30 to 170
(R) $E \propto Z(Z - 1)$ (3) energy of continuous x-rays
(S) $E$ is practically independent of $Z$ (4) average nuclear binding energy per nucleon for stable nuclei with mass number in the range 30 to 170
(5) energy of radiation due to electronic transitions from hydrogen-like atoms
A

P→4, Q→3, R→1, S→2

B

P→5, Q→2, R→1, S→4

C

P→5, Q→1, R→2, S→4

D

P→3, Q→2, R→1, S→5

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