Question

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? 

Solution

Correct option is

0.6 nm

We use Bragg’s equation . Here order n = 1,  andd = 0.6 nm.

Therefore, 

             

                 = 0.6 nm.

SIMILAR QUESTIONS

Q1

X-rays can be diffracted from crystals like the diffraction of light from a grating. The crystal grating for X-rays has a grasting element  

Q2

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

Q3

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

Q4

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

Q5

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  

Q6

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

Q7

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

Q8

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 ?   

Q9

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 ?   

Q10

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