Home
Class 12
PHYSICS
The wavelengths of Kalpha X-rays from l...

The wavelengths of `K_alpha` X-rays from lead isotopes `Pb^(204) , Pb^(206) and Pb^(208)` are `lambda_1, lambda_2 and lambda_3` respectively. Choose the correct alternative.

A

`lambda_(1)=lambda_(2)gtlambda_(3)`

B

`lambda_(1)gtlambda_(2)gtlambda_(3)`

C

`lambda_(1)ltlambda_(2)ltlambda_(3)`

D

`lambda_(2)=sqrt(lambda_(1)lambda_(3))`

Text Solution

Verified by Experts

The correct Answer is:
D
Since, atomic numer are same `lambda_(1)=lambda_(2)=lambda_(3)`
` or " " lambda_(2)=sqrt(lambda_(1)lambda_(3))`
Promotional Banner

Topper's Solved these Questions

  • ATOMS

    DC PANDEY ENGLISH|Exercise ASSERTION AND REASON|10 Videos

  • ATOMS

    DC PANDEY ENGLISH|Exercise MATCH THE COLUMNS|4 Videos

  • ATOMS

    DC PANDEY ENGLISH|Exercise Check point 12.3|15 Videos

  • ALTERNATING CURRENT

    DC PANDEY ENGLISH|Exercise JEE MAIN|62 Videos

  • CAPACITORS

    DC PANDEY ENGLISH|Exercise OBJECTIVE_TYPE|1 Videos

Similar Questions

Explore conceptually related problems

The wavelength of the short radio waves, microwaves, ultraviolet waves are lambda_(1),lambda_(2) and lambda_(3) , respectively, Arrange them in decreasing order.

The wavelengths of photons emitted by electron transition between two similar leveis in H and He^(+) are lambda_(1) and lambda_(2) respectively. Then :-

The wavelengths of photons emitted by electron transition between two similar leveis in H and He^(+) are lambda_(1) and lambda_(2) respectively. Then :-

An electron, a neutron and an alpha particle have same kinetic energy and their de-Broglie wavelength are lambda_e, lambda_n and lambda_(alpha) respectively. Which statement is correct about their de-Broglie wavelengths?

The threshold wavelength for two photosensitive surfaces A and B are lambda 1 and lambda 2 respectively. What is the ratio of the work functions of the two surfaces?

The wavelengths and frequencies of photons in transition 1,2 and 3 for hydrogen like atom are lambda_(1),lambda_(2),lambda_(3), v_(1),v_(2) and v_(3) respectively. Then:

Energy levels A,B,C of a certain atoms corresponding to increasing values of energy level i.e., E_(A) lt E_(B) lt E_(C) . If lambda_(1), lambda_(2) and lambda_(3) are the wavelengths of radiations corresponding to the transitions C to B,B to A and C to A respectively which of the following statement is correct?

X-ray from a tube with a target A of atomic number Z shows strong K lines for target A and weak K lines for impurities. The wavelength og K_(alpha) lines is lambda_(z) for target A and lambda_(1) and lambda_(2) for two impurities. (lambda_(z))/(lambda_(1)) = 4 and (lambda_(z))/(lambda_(2)) = (1)/(4) Assuming the screeining contant of K_(alpha) lines to be unity select the correct statement(s).

X-ray from a tube with a target A of atomic number Z shows strong K lines for target A and weak K lines for impurities. The wavelength og K_(alpha) lines is lambda_(z) for target A and lambda_(1) and lambda_(2) for two impurities. (lambda_(z))/(lambda_(1)) = 4 and (lambda_(z))/(lambda_(2)) = (1)/(4) Assuming the screeining contant of K_(alpha) lines to be unity select the correct statement(s).

A dye absorbs a photon of wavelength lambda and re - emits the same energy into two phorons of wavelengths lambda_(1) and lambda_(2) respectively. The wavelength lambda is related with lambda_(1) and lambda_(2) as :

DC PANDEY ENGLISH-ATOMS-Taking it together
  1. The K(alpha)andK(beta) lines of charateristic X-ray spectrum of molybd...

    Text Solution

    |

  2. The longest wavelength that can be analysed by a sodium chloride cryst...

    Text Solution

    |

  3. The wavelengths of Kalpha X-rays from lead isotopes Pb^(204) , Pb^(20...

    Text Solution

    |

  4. The graph between the square root of the frequency of a specific line ...

    Text Solution

    |

  5. The ratio between acceleration of the electron in singlely ionized hel...

    Text Solution

    |

  6. Magnetic moment of an electron in nth orbit of hydrogen atom is

    Text Solution

    |

  7. A sphere of work function phi=4.6 eV is suspended in a vacuum number b...

    Text Solution

    |

  8. The wavelength of radiation emitted is lambda(0) when an electron jump...

    Text Solution

    |

  9. Hard X-ray for the study of fractures in bones should have a minimum w...

    Text Solution

    |

  10. An electron with kinetic energy 5eV is incident on a hydrogen atom in ...

    Text Solution

    |

  11. An electron makes a transition from orbit n=4 to the orbit n=2 of a hy...

    Text Solution

    |

  12. The minimum energy to ionize an atom is the energy required to

    Text Solution

    |

  13. Let v(1) be the frequency of the series limit of the Lyman series, v(2...

    Text Solution

    |

  14. The shortest wavelength of the Brackett series of a hydrogen-like ato...

    Text Solution

    |

  15. When an alpha-particle of mass m moving with velocity v bombards on he...

    Text Solution

    |

  16. The energy of an electron in excited hydrogen atom is -3.4 eV . Then, ...

    Text Solution

    |

  17. The shortest wavelength which can be obtained in hydrogen spectrum (R=...

    Text Solution

    |

  18. The wavelength of th first spectral line of sodium 5896 Å . The fisrt ...

    Text Solution

    |

  19. The shortest wavelength in Lyman series is 91.2 nm. The longest wavele...

    Text Solution

    |

  20. Energy of 24.6 eV is required to remove one of the electron from a neu...

    Text Solution

    |