Characteristic and Continuous X-Rays

IMPORTANT

Characteristic and Continuous X-Rays: Overview

This Topic covers sub-topics such as Characteristic X-rays, Continuous X-rays, Mode of Production of Continuous X-rays, Mode of Production of Characteristic X-rays and, Cut off Wavelength of Continuous X-ray

Important Questions on Characteristic and Continuous X-Rays

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A potential difference of 20 kV is applied across an X-ray tube. The minimum wavelength of X-rays generated is

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The wavelength of the characteristic X-ray   K α line emitted by a hydrogen like element is 0.32 Å. The wavelength of the   K β line emitted by the same element will be___________.

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To produce characteristic X-rays using a Tungsten target in an X-ray generator, the accelerating voltage Vaccelerating should be greater than ______ volts and the energy E of the characteristic radiation is ______ eV.

(The binding energy of the innermost electron in Tungsten is 40 keV).

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Electrons with de-Broglie wavelength λ fall on the target in an X-ray tube. The cut-off wavelength of the emitted X-rays is

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Electrons of mass m with de Broglie wavelength λ fall on the target in an X-ray tube. The cut-off wavelength λ0 of the emitted X-ray is

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The speed of the colliding electron is increased in an X-ray tube, then

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In a coolidge tube, the potential difference used to accelerate the electrons is increased from 12.4 kV  to 24.8 kV. As a result the difference between λKα and λmin increases three fold. The wavelength of Kα line is - hce=12.4 kV Ao

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According to Mosley's law of characteristic X-ray. Which of the following is correct?

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If the operating potential of an X-ray tube is 50 kV the velocity of X-rays coming out of it is

MEDIUM
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In an x-ray tube, for an operating voltage, the cut off wavelength is λ0. If operating voltage is slightly increased by ΔV then choose correct statement:

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Consider a photon of continuous X-ray and a photon of characteristics X-ray of the same wavelength. Which of the following is different for the two photons?

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X-rays are produced in an X-ray tube operating at a given accelerating voltage. The wavelength of the continuous X-rays has values from :-

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If the potential difference applied across a coolidge tube is increased, then:-

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In X-ray tube, when the accelerating voltage V is halved, what will be the difference between the wavelength of Kα line and continuous X-ray spectrum's minimum wavelength ?

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Let the voltage applied to an X-ray tube be increased 1.5 times and the minimum wavelength λmin of an X-ray continuous spectrum shift by Δλ=26 pm. What will be the initial voltage applied to the tube?

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What does sharp peaks A and B donates in the given figure representing the observed intensity of X-rays emitted by an X-ray tube as a function of wavelength.
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What should be the wavelength (in A ) of X-ray used for getting the first order Bragg reflection at a glancing angle of 14.7° for a crystal having a distance of 4 A between its two parallel planes? (Considercos75.3°=0.25)

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Cut-off wavelength that is the minimum wave length of the X-rays produced in an X-ray tube is:

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In the context of X-rays generated from an X-ray tube, which amongst the following statements is not correct?

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If λmin  is minimum wavelength produced in X-ray tube when Ni (Nickelis the target material used and λkα is the wavelength of kα line. If we increase the operating tube voltage and Ca (Calcium) is used as a target material in place of Ni, then the difference λkα-λmin will: