Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number of spectral lines in the emissio - Physics MCQ AIEEE 2012 2026 | ExamTest.live | ExamTest.live

Home Tests Search Rank Profile

easyMCQAIEEE 20122026Physics

1 mark

Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number of spectral lines in the emission spectra will be:

A $2$
B $3$
C $5$
D $6$

Solution & Step-by-step Explanation

The number of spectral lines emitted when an electron jumps from the n -th state to the ground state is given by the formula: N = \frac{n ( n - 1 )}{2} Given n = 4 : N = \frac{4 ( 4 - 1 )}{2} = \frac{4 \times 3}{2} = 6 The lines correspond to transitions: 4 \to 3, 4 \to 2, 4 \to 1, 3 \to 2, 3 \to 1, 2 \to 1 .

Practice this question

Try it yourself before checking the explanation above.

Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number of spectral lines in the emission spectra will be:

A

2

B

3

C

5

D

6

Share This Question

Modern Physics Atoms

Related Questions

Which one of the following statements is true?

Which of the following statements is not correct?

Which one of the following statements is correct?

The product formed by the reaction of an aldehyde with a primary amine is:

Which part of the tobacco plant is infected by Meloidogyne incognita?

The term ecosystem was coined by:

Ready for a Full Test?

Practice with timed mock tests and track your performance across Physics.

Browse Tests Leaderboard

Discussion