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Atoms and Nuclei question

2009 · Q147
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Atoms and Nuclei question

2009 · Q147

NEETPhysicsAtoms and NucleiMCQ+4 / −1
In a Rutherford scattering experiment when a projectile of charge z1 and mass M1 approaches a target nucleus of charge z2 and mass M2, the distance of closest approach is r0. The energy of the projectile is
  1. A
    directly proportional to z1z2
  2. B
    inversely proportional to z1
  3. C
    directly proportional to mass M1
  4. D
    directly proportional to M1 ×\times× M2
View written solutionFree

Correct answer: A

Now energy of the projectile :

= 14πε0z1z2r{1 \over {4\pi {\varepsilon _0}}}{{{z_1}{z_2}} \over r}4πε0​1​rz1​z2​​

Therefore energy ∝\propto∝ z1z2

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