The Wavelength Of  line From An Element Of Atomic Number 41 is . Then The Wavelength Of  line Of An Element Of Atomic Number 21 Is 

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Question

The wavelength of  line from an element of atomic number 41 is . Then the wavelength of  line of an element of atomic number 21 is 

Solution

Correct option is

From Moseley’s law, we have   

          

                = 4. 

   

                      .

Testing

SIMILAR QUESTIONS

Q1

In the continuous part of the spectrum of X-rays the limiting frequency is

Q2

An X-ray photon has a wavelength of 0.02 Å. Its momentum is

Q3

The potential difference applied to an X-ray tube is increased. As s result, in the emitted radiation, 

Q4

In an X-ray tube, electrons accelerated through a very high potential difference strike a metal target. If the potential difference is increased, the speed of the emitted X-rays  

Q5

The operating voltage in an X-ray tube is 10 kV. The maximum energy of the emitted X-ray photons will be 

Q6

An X-ray tube is operated at 66 kV. Then, in the continuous spectrum of the emitted X-rays

Q7

The minimum wavelength of X-rays produced in an X-ray tube is  when the operating voltage is V. What is minimum wavelength of the X-rays when the operating voltage is ?   

Q8

The maximum frequency of X-rays produced in an X-ray tube is v when the operating voltage is V. What is the maximum frequency of the X-rays when the operating voltage is ?   

Q9

X-rays are incident normally on a crystal of lattice constant 0.6 nm. The first order reflection on diffraction from the crystal occurs at an angle of 30o. What is the wavelength of X-rays used? 

Q10

An X-rays photon of wavelength  and frequency v collides with an electron and bounces off. If  are respectively the wavelength and frequency of the scattered photon, then