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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.
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Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- When the speed of electron beam used in Young’s double slit experiment is increased,
- The resistance of a wire is 5 ohm at 50° C and 6 ohm at 100° C. The resistance
- Two point charge +9e and +e are at 16 cm away from each other.
- An alternating emf given by equation e=300 sin[(100 π)t] V
- A boat of anchor is rocked by waves whose crests are 100 m apart and velocity
Topics: Atoms and Nuclei (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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