Question

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

Solution

Correct option is

  

          

        .

SIMILAR QUESTIONS

Q1

The first scientist to measure the charge to mass ratio of the electron was

Q2

In Thomson’s experiment for determining , the potential difference between the cathode and the anode (in the accelerating column) is the same as that between the deflecting plates (in the region of crossed fields). If the potential difference is doubled, by what factor should the magnetic field be increased to ensure that the electron beam remains undeflected?

Q3

The minimum wavelength of X-rays emitted from an X-ray tube operating at a voltage of 104 volts is roughly equal to  

Q4

The energy in monochromatic X-rays of wavelength 1 Å is roughly equal to

Q5

What is the unit of Planck’s constant?

Q6

What are the dimensions of Planck’s constant?

Q7

An X-rays tube produces X-rays whose shortest wavelength is 0.2475 Å. The operating voltage of the tube must be   

Q8

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  

Q9

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

Q10

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