JEE-MAIN SERIES

Physics

Atomic Spectra

8 previous year questions.

Volume: 8 Ques

Yield: Medium

High-Yield Trend

3

2026

1

2025

1

2024

2

2023

1

2022

Chapter Questions
8 MCQs

01

PYQ 2022

medium

physics ID: jee-main

Find the ratio of energies of photons produced due to transition of an electron of hydrogen atom from its (i) second permitted energy level to the first level, and (ii) the highest permitted energy level to the first permitted level.

1

3 : 4

2

4 : 3

3

1 : 4

4

4 : 1

02

PYQ 2023

medium

physics ID: jee-main

If half life for a radioactive decay reaction is T. Find the time after which of initial mass decays

1

3T

2

2T

3

4

4T

03

PYQ 2023

medium

physics ID: jee-main

An atom absorbs a photon of wavelength 500 nm and emits another photon of wavelength 600 nm. The net energy absorbed by the atom in this process is n \times 10 -4 eV. The value of n is____.[Assume the atom to be stationary during the absorption and emission process](Take h = 6.6 x 10 -34 js and c = 3 x 10 8 m/s)

04

PYQ 2024

medium

physics ID: jee-main

The longest wavelength associated with Paschen series is: (Given SI unit)

1

m

2

m

3

m

4

m

05

PYQ 2025

medium

physics ID: jee-main

For a hydrogen atom, the ratio of the largest wavelength of the Lyman series to that of the Balmer series is:

1

2

3

4

06

PYQ 2026

medium

physics ID: jee-main

The ratio of momentum of the photons of the and line of Balmer series of Hydrogen atoms is . The possible values of and are:-

1

27 and 20

2

3 and 16

3

5 and 36

4

20 and 27

07

PYQ 2026

medium

physics ID: jee-main

What will be the ratio of the wavelength of the 3rd line of the Paschen Series to the 2nd line of the Balmer series of H-atom?

1

2

3

4

08

PYQ 2026

medium

physics ID: jee-main

An electron makes transition from higher energy orbit to lower energy orbit in ion such that and . Determine the wavelength of emitted photon in transition (in cm).

1

cm

2

cm

3

cm

4

cm