Leadership

Physics

Ten Standard

Test your understanding of this lesson Natural radioactivity | Part-1:-

1)
Radioactivity is related to
  • emission of \(\alpha,\beta\) and \(\gamma\) rays
  • disintegration of heavy nucleus
  • formation of new elements
  • Above all
2)
When \(\alpha\) particle is emitted from heavy nucleus
  • mass number is decreased by 2
  • atomic number is decreased by 2
  • atomic number is decreased by 2 & mass number is decreased by 4
  • both mass & atomic number is decreased by 2
3)
When \(\beta\) particle is emitted from heavy nucleus
  • atomic number is increased by 1
  • atomic number is decreased by 1
  • atomic number is decreased by 2
  • mass number is decreased by 1
4)
Electromagnetic wave is
  • \(\alpha\) rays
  • \(\beta\) rays
  • \(\gamma\) rays
  • All three rays above
5)
The perfect order in terms of penetrating power is
  • \(\alpha\)>\(\beta\)>\(\gamma\)
  • \(\alpha\)>\(\gamma\)>\(\beta\)
  • \(\alpha\)<\(\beta\)<\(\gamma\)
  • \(\beta\)>\(\gamma\)>\(\alpha\)
Hand draw

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