If the wavelength of first member of Balmer series of hydrogen spectrum is 6564&

Question

If the wavelength of first member of Balmer series of hydrogen spectrum is

6564 ˙ A

, the wavelength of second member of Balmer series will be:

Options:

A . 1215˙A

B . 4862˙A

C . 6050˙A

D . 5892˙A

Answer: Option B
:
B

\frac{1}{λ_{1}} \propto [\frac{1}{2^{2}} - \frac{1}{3^{2}}]

\frac{1}{λ_{1}} \propto \frac{5}{36}

. . . .(1)

\frac{1}{λ_{2}} \propto [\frac{1}{4} - \frac{1}{16}]

\frac{1}{λ_{2}} \propto [\frac{3}{16}]

. . . .(2)

\frac{λ_{2}}{λ_{1}} = \frac{5 \times 16}{36 \times 3} = \frac{20}{27}

λ_{2} = \frac{20}{27} \times 6564 = 4862 ˙ A

Was this answer helpful ?

Next Question

More Questions on This Topic :

Question 1. In a Bohr atom the electron is replaced by a particle of mass 150 times the mass of the electron and the same charge. If....Bohr orbit, then that of the new atom will be

Question 2. Ionisation energy for hydrogen atom in the ground state is E. What is the ionisation energy of Li++ atom in the 2nd ex....of Li++ atom in the 2nd excited state

Question 3. A photon of energy 12.4 eV is completely absorbed by a hydrogen atom initially in the ground state so that it is excite....is excited. The quantum number of the excited state is

Question 4. The binding energy per nucleon of deuteron (21H) and helium nucleus (42He) is 1.1 MeV and 7 MeV respectively. If two deu....form a single helium nucleus, then the energy released is

Question 5. Two protons exerts a nuclear force on each other, the distance between them is....

Question 6. If m, mn and mp are the masses of ZXA nucleus, neutron and proton respectively....

Question 7. A atomic power reactor furnace can deliver 300 MW. The energy released due to fission of each of uranium atom U238 is 17....The number of uranium atoms fission per hour will be

Question 8. A radioactive substance has a half life of 60 minutes. After 3 hours, the percentage of atom that have decayed would be....hours, the percentage of atom that have decayed would be

Question 9. What is the respective number of α and β particles emitted in the following radioactive decay 90X200&#.... and β particles emitted in the following radioactive decay 90X200→80Y168

Question 10. The ratio of radii of nuclei 2713 Al and 12552 Te is approximately....

Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI

Tabulation - Test Paper 2 Data Interpretation Reasoning & DI

Test Paper 1 Direction Sense Test Reasoning & DI

ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0

GFM Combined 1 Free Revision Test SAIL JO E-0