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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 r. The energy of the projectile is
Options
(a) directly proportional to Z₁ Z₂
(b) inversely proportional to Z₁
(c) directly proportional to mass M₁
(d) directly proportional to M₁ x M₂
Correct Answer:
directly proportional to Z₁ Z₂
Explanation:
The kinetic energy of the projectile is given by
1/2 mv² = Ze (2e) / 4π?￢ﾂﾀr₀
= Z₁ Z₂ / 4π?￢ﾂﾀr₀
Thus energy of the projectile is directly proportional to Z₁, Z₂.
Related Questions: - Which of the two have same dimensions?
- An electric charge 10⁻³ μC is placed at the origin (0,0) of X-Y co-ordinate system.
- A black body at 227⁰C radiates heat at the rate of 7cals/cm²s. At a temperature
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Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the two have same dimensions?
- An electric charge 10⁻³ μC is placed at the origin (0,0) of X-Y co-ordinate system.
- A black body at 227⁰C radiates heat at the rate of 7cals/cm²s. At a temperature
- A ball of mass 2 kg and another of mass 4 kg are dropped together from
- If a proton, a deuteron and an alpha particle, on being accelerated by the same
Topics: Atoms and Nuclei (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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