Home
Class 12
PHYSICS
In terms of Rydberg constant R, the wave...

In terms of Rydberg constant R, the wave number of the first Balmer line is

A

R

B

3R

C

`(5R)/(36)`

D

`(8R)/(9)`

Text Solution

Verified by Experts

The correct Answer is:
C

For the first Balmer line `overline upsilon = (1)/(lambda) = R ((1)/(2^(2)) - (1)/(3^(2))) = (5R)/(36)`
Promotional Banner

Topper's Solved these Questions

  • ATOMIC AND NUCLEAR PHYSICS

    FULL MARKS|Exercise Additional question (Short Answer Questions)|6 Videos
  • ATOMIC AND NUCLEAR PHYSICS

    FULL MARKS|Exercise Additional question (Numerical Problems)|12 Videos
  • ATOMIC AND NUCLEAR PHYSICS

    FULL MARKS|Exercise Textual Evaluation Solved (Exercise)|11 Videos
  • COMMUNICATION SYSTEMS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS  (Additional problems)|3 Videos

Similar Questions

Explore conceptually related problems

Rydberg's constant, R = ?

The unit of Rydberg constant is

Given the value of Rydberg constant is 10^7 m^-1 , the wave number of the last line of the Balmer series in hydrogen spectrum will be:

The value of Rydberg's constant is

If R is Rydberg constant, the shortest wavelength of paschen series is

The Rydberg's constant R for hydrogen is

Evalute Rydberg constant by putting the value of the fundamental constants in its expression

If R is Rydberg's constant, the minimum wavelength of hydrogen spectrum is

Using the Rydberg formula , calculate the wavelength of the first four spectral lines in the Lyman series of the hydrogen spectrum .

The first term of an arithmetic progression is 1 and the sum of the first nine terms equal to 369 . The first and the ninth term of a geometric progression coincide with the first and the ninth term of the arithmetic progression. Find the seventh term of the geometric progression.

FULL MARKS-ATOMIC AND NUCLEAR PHYSICS-Additional question (Multiple Choice Question)
  1. According to Rutherford's atomic model, the electron inside an atom ar...

    Text Solution

    |

  2. Wavelength of a light emitted from second orbit to first orbit in a hy...

    Text Solution

    |

  3. In terms of Rydberg constant R, the wave number of the first Balmer li...

    Text Solution

    |

  4. The K(infty) X-ray emission line of tungsten occurs at lambda = 0.021 ...

    Text Solution

    |

  5. The radius of an electron orbit in a hydrogen atom is of the order of

    Text Solution

    |

  6. Which of the following atoms has the lowest ionisation potential?

    Text Solution

    |

  7. The transition from the state n = 4 to n = 1 in a hydrogen like atom r...

    Text Solution

    |

  8. The number of waves contained in a unit length of the medium is called...

    Text Solution

    |

  9. When hydrogen atom is in its first excited level, its radius is of th...

    Text Solution

    |

  10. The ground state of energy of hydrogen atom is -13.6 eV.What is the po...

    Text Solution

    |

  11. For ionising an excited hydrogen atom, the energy required (in eV) wil...

    Text Solution

    |

  12. What is the energy of He^(+) electron in first order?

    Text Solution

    |

  13. If voltage across on X-ray tube is doubled, then energy of X-ray emitt...

    Text Solution

    |

  14. When hydrogen atom is in its first excited level, its radius is of th...

    Text Solution

    |

  15. The ionisation energy of hydrogen atom is 13.6 eV, the ionisation ener...

    Text Solution

    |

  16. When an electron makes transition from n = 4 to n = 2, then emitted l...

    Text Solution

    |

  17. Maximum frequency of emission is obtained for the transition

    Text Solution

    |

  18. Hydrogen atoms are excited from ground state to the state of priciple ...

    Text Solution

    |

  19. The radius of hydrogen atom, in the ground state is of the order of

    Text Solution

    |

  20. According to Bohr's theory of the hydrogen atom, the speed v(n) of the...

    Text Solution

    |