Home
Class 12
PHYSICS
Kalpha wavelength emitted by an atom of ...

`K_alpha` wavelength emitted by an atom of atomic number Z=11 is `lambda`. Find the atomic number for an atom that emits `K_alpha` radiation with wavelength `4lambda`.

A

`Z = 6`

B

`Z = 4`

C

`Z = 11`

D

`Z = 44`

Text Solution

Verified by Experts

The correct Answer is:
A
`1/lambda prop (Z-1)^(2) :. lambda_(1)/lambda_(2)=((Z_(1)-1)/(Z_(1)-1))^(2)implies 1/4=((Z_(2)-1)/(11-1))^(2)`
solving this, we get `Z_(2)=6`
Promotional Banner

Topper's Solved these Questions

  • SIMPLE HARMONIC MOTION

    ALLEN|Exercise MCQ s|8 Videos

  • SIMPLE HARMONIC MOTION

    ALLEN|Exercise Comprehension #1|3 Videos

  • SIMPLE HARMONIC MOTION

    ALLEN|Exercise Exercise - 04[A]|25 Videos

  • RACE

    ALLEN|Exercise Basic Maths (Wave Motion & Dopplers Effect) (Stationary waves & doppler effect, beats)|24 Videos

  • TEST PAPER

    ALLEN|Exercise PHYSICS|4 Videos

Similar Questions

Explore conceptually related problems

If the wavelength of K_(alpha) radiation emitted an atom of atomic number Z = 41 is lambda , then the atomic number for an atom that emits K_(alpha) radiation with the wavelength 4lambda , is

An element of atomic number 9 emits K_(alpha) X-ray of wavelength lamda . Find the atomic number of the element which emits K_(alpha) X-ray of wavelength 4lamda .

The atomic number and the mass number of an atom remains unchanged when it emits

The wavelength of the K_(alpha) line for an element of atomic number 57 is lambda . What is the wavelength of the K_(alpha) line for the element of atomic number29 ?

The atomic number (2) of an element whose k, wavelength is lambda is 11. The atomic number of an element whose wavelength is 4lambda is equal to

The K_(alpha) wavelength of an element with atomic number z is lambda_z . The k_(alpha) wavelength of an element with atomic number 2z is lambda_(2z) . How are lambda_z and lambda_(2z) related ?

The wavelength of K_(alpha) line for an element of atomic number 43 is lambda . Then the wavelength of K_(alpha) line for an element of atomic number 29 is

Atomic numbers of two element are 31 and 41. Find the ratio of the wavelength of the K_(alpha) are

The wavelength of light emitted from second orbit to first orbits in a hydrogen atom is

Wavelength of K_alpha line of an element is lambda_0 . Find wavelength of K_beta - line for the same elemetn.

ALLEN-SIMPLE HARMONIC MOTION-Exercise-05(B)
  1. The figure shows the variation of pholo current with for a photo-sensi...

    Text Solution

    |

  2. A photon and an electron have equal energy E, the ratio (lamda"photon"...

    Text Solution

    |

  3. After 280 days, the activity of a radioactive sample is 6000 dps. The ...

    Text Solution

    |

  4. A photon collides with a stationary hydrogen atom in ground state inel...

    Text Solution

    |

  5. Kalpha wavelength emitted by an atom of atomic number Z=11 is lambda. ...

    Text Solution

    |

  6. If a star converts all helium in its core to oxygen then energy releas...

    Text Solution

    |

  7. Half-life of a radioactive substance A is 4 days. The probability that...

    Text Solution

    |

  8. The largest wavelength in the ultraviolet region of the hydrogen spec...

    Text Solution

    |

  9. Electrons of mass m with de-Broglie wavelength lambda fall on the targ...

    Text Solution

    |

  10. In the options given below, let E denote the rest mass energy of a nuc...

    Text Solution

    |

  11. Which one the following statement is wrong , in the context of X - ray...

    Text Solution

    |

  12. A radioactive sample S1 having an activity of 5muCi has twice the numb...

    Text Solution

    |

  13. Photoelectric effect experiments are performed using three different m...

    Text Solution

    |

  14. A pulse of light of duration 100 ps is absorbed completely by a small ...

    Text Solution

    |

  15. if lambda(Cu) is the wavelength of Kalpha, X-ray line fo copper (atomi...

    Text Solution

    |

  16. A metal surface is illuminated by light of two different wavelengths 2...

    Text Solution

    |

  17. In a historical experiment to determine Planck's constant, a metal sur...

    Text Solution

    |

  18. The electrostatic energy of Z protons uniformly distributed throughout...

    Text Solution

    |

  19. As accident in a nuclear laboratory resulting in deposition of a certa...

    Text Solution

    |

  20. Light of wavelength lambda(ph)falls on a cathode plate inside a vacuum...

    Text Solution

    |