Home
Class 12
PHYSICS
The wavelength of the characteristic X -...

The wavelength of the characteristic X - ray `k_(alpha )` line emited by a bydroges like element is `0.32 lambda ` . The wavelength of the `K_(beta)` line emited by the same element will be …..

Text Solution

Verified by Experts

The correct Answer is:
B

We know that
`For K_(a) , (1)/(lambda) = c [(1)/(n_(1)^(2) - (1)/(n_(2)^(2) ]] , `where `C` is a constant
`rArr (1)/(0.32Å) = C [ (1)/(1^(2)) - (1)/(3^(2))] = (3C)/(4)` ….(i)
For `K_(beta), (1)/(lambda) = C [ (1)/(1^(2)) - (1)/(3^(2))] = (8C)/(9)`
On dividing ` lambda = 0.27 Å`
Promotional Banner

Topper's Solved these Questions

  • MODERN PHYSICS

    SUNIL BATRA (41 YEARS IITJEE PHYSICS)|Exercise MCQ (One Correct Answer|1 Videos
  • ELECTROSTATICS

    SUNIL BATRA (41 YEARS IITJEE PHYSICS)|Exercise Comprehension Based Questions|2 Videos
  • MOVING CHARGES AND MAGNETISM

    SUNIL BATRA (41 YEARS IITJEE PHYSICS)|Exercise MCQs(d )|1 Videos

Similar Questions

Explore conceptually related problems

The wavelength of K_(alpha) –line characteristic X–rays emitted by an element is 0.32Å. The wavelength of K_(beta) –line emitted by the same element will be :–

The wavelength of the characteristic X-ray K_(alpha) line emitted from Zine (Z = 30) is 1.415 Å . Find the wavelength of the K_(alpha) line emitted from molybdenum Z = 42) .

The wavelength of K_(alpha) X-ray line for an element is 0.42Å . Find the wavelength of K_(beta) line emitted by the same element.

A The wavelength of the K_alpha line ofthe characteristic X rays emitted by an element is 0.64 Å . What is the wavelength of K_beta line emitted by the same element?

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

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 wavelength lambda of the K_(a) line of characteristic X - ray spectra varies with atomic number approximately

The K_(alpha) line obtained for molybdenum (Z = 42) is 0.71 Å. Then, the wavelength of the K_(alpha) line of copper (Z = 29) is

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

If wavelength of K_(beta) from an element is 5.4 Å. Calculate wavelength for K_(alpha) from the same element.