The ratio of wavelengths of the last line of Balmer series and the last line of Lyman series is: - Physics MCQ NEET (UG) 2017 2026 | ExamTest.live | ExamTest.live

Home Tests Search Rank Profile

mediumMCQNEET (UG) 20172026Physics

1 attempts0% success rate1 mark

The ratio of wavelengths of the last line of Balmer series and the last line of Lyman series is:

A $1$
B $4$
C $0.5$
D $2$

Solution & Step-by-step Explanation

For the last line (series limit), n_{2} = \infty .Lyman series limit: \frac{1}{λ _{L}} = R (\frac{1}{1 ^{2}} - \frac{1}{\infty ^{2}}) = R ⟹ λ_{L} = \frac{1}{R} .Balmer series limit: \frac{1}{λ _{B}} = R (\frac{1}{2 ^{2}} - \frac{1}{\infty ^{2}}) = \frac{R}{4} ⟹ λ_{B} = \frac{4}{R} .Ratio \frac{λ _{B}}{λ _{L}} = \frac{4/ R}{1/ R} = 4 .

Practice this question

Try it yourself before checking the explanation above.

The ratio of wavelengths of the last line of Balmer series and the last line of Lyman series is:

A

1

B

4

C

0.5

D

2

Share This Question

Atoms Spectral Series

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