JEE Main 2021 · 24 Feb · Shift 1 · Physics Q17

← JEE Main 2021 · 24 Feb · Shift 1

PhysicsSingle correct+4 / -1Question 17 of 90

In the given figure, the energy levels of hydrogen atom have been shown along with some transitions marked A, B, C, D and E.

The transitions A, B and C respectively represent :

Hydrogen energy levels n = 1 (−13.6 eV) to n = 5 (−0.54 eV) under the continuum; A goes from the continuum to n = 1, B from n = 5 to n = 2, C from n = 5 to n = 3, D from n = 4 to n = 2, E from the continuum to n = 1.

The first member of the Lyman series, third member of Balmer series and second member of Paschen series.

The ionization potential of hydrogen, second member of Balmer series and third member of Paschen series.

The series limit of Lyman series, second member of Balmer series and second member of Paschen series.

The series limit of Lyman series, third member of Balmer series and second member of Paschen series.

Answer and worked solution

Official answer: D

Transitions. A: continuum → n = 1, the Lyman series limit. B: 5 → 2, the third Balmer line (after 3 → 2 and 4 → 2). C: 5 → 3, the second Paschen line (after 4 → 3).

(D)

Topics:Bohr model and hydrogen spectrum

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JEE Main 2021 · 24 Feb · Shift 1, Physics question 17