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Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter1 Mark
MCQ
The electron cannot exist inside the nucleus because:
  • A
    de-Broglie wavelength associated with electron in $\beta$ -decay is much less than the size of nucleus
  • B
    de-Broglie wavelength associated with electron in $\beta$ -decay is much greater than the size of nucleus
  • C
    de-Broglie wavelength associated with electron in $\beta$ -decay is equal to the size of nucleus
  • D
    de-Broglie negative charge cannot exist in the nucleus
✓

Answer

  1. de-Broglie wavelength associated with electron in β -decay is much greater than the size of nucleus

Explanation:

$\beta$−decay:

$\beta$− radioactivity occurs when a nucleus emits a negative electron from an unstable radioactive nucleus whose deBroglie wavelength of  order MeV is much larger than nuclear dimensions.

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