frequency = speed of light / wavelength = 3 * 10^8/2.65 = 1.13 * 10^8
If the unit of wavelength is in meters, then 1.13 * 10^8 hertz is your answer. If it is in any other unit, you can derive for that one!!!
The frequency of an x-ray beam with wavelength of [tex]2.65 nm[/tex] is [tex]1.13*10^{17} Hz[/tex].
The x-ray beam is emission of electromagnetic radiation or particles from the x-ray tube. The rate at which energy is delivered by a beam is determined by the number of photons of each energy.
The defining characteristics of X-rays is their ability to penetrate optically opaque materials, their wavelengths of atomic dimension, the high energy of individual X-ray photons.
Frequency is the number of waves that pass a fixed place in a given amount of time.
[tex]f = \frac{1}{T}[/tex]
Where,
[tex]f=[/tex] frequency
[tex]T=[/tex] period
Wavelength is the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.
[tex]\lambda=\frac{v}{f}[/tex]
Where,
[tex]f=[/tex] frequency
[tex]v=[/tex] velocity
[tex]\lambda =[/tex] wavelength
Given:
[tex]v= 3*10^{8} m/s[/tex]
[tex]\lambda = 2.65 nm[/tex]
[tex]\lambda=\frac{v}{f}\\2.65*10^{-9} =\frac{3*10^{8} }{f}\\f = 1.13*10^{17} Hz[/tex]
The calculated frequency is [tex]1.13*10^{17} Hz[/tex].
To learn more about X-rays here
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