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Which of the following is accompanied by...

Which of the following is accompanied by the characteristic `X` - ray emission ?

A

`alpha` - particle emission

B

Electron emission

C

Positron emission

D

`K` - electron capture

Text Solution

Verified by Experts

The correct Answer is:
D
Nucleus of heavy atom captures electron of `k - orbit`. This is a radioactive process , so vacancy of this electron is filled by an outer electron and `x - rays ` are produces .
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A2Z-DUAL NATURE OF RADIATION AND MATTER-X-Rays
  1. Molybdenum is used as a target element for production of X - rays beca...

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  2. The continuous X - rays spectrum produced by an X - ray machine at con...

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  3. Which of the following is accompanied by the characteristic X - ray em...

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  4. In an X - rays tube , the intensity of the emitted X - rays beam is in...

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  5. Penetrating power of X - rays depends on

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  6. The energy of a photon of characteristic X-ray from a Coolidge tube co...

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  7. Penetrating power of X - rays can be increased by

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  8. The essential distinction between X - rays and gamma - rays is that

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  9. What determines the hardness of the X - rays obtained from the Coolidg...

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  10. The most penetrating radiation out of the following is

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  11. On increasing the number of electrons striking the anode of an X - ray...

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  12. Penetrating power of X - rays does not depend on

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  13. The wavelength of X - rays decreases , when

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  14. If the cathode - anode potential difference in an X - ray tube be 10^(...

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  15. The shorted wavelength of X- rays emitted from an X- rays tube depends...

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  16. When a beam of accelerated electrons hits a target , a continuous X - ...

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  17. If lambda(1) and lambda(2) are the wavelength of characteristic X - ra...

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  18. The wavelength lambda of the K(a) line of characteristic X - ray spect...

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  19. The minimum wavelength of X - rays produced by electrons accelerated b...

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  20. The potential difference applied to an X-ray tube is increased. As a r...

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