| ⇦ | 
| ⇨ |
An alpha nucleus of energy 1/2 mv² bombards a heavy nuclear target of charge Ze. Then the distance of closest approach for the alpha nucleus will be proportional to
Options
(a) 1 / Ze
(b) v²
(c) 1 / m
(d) 1 / v⁴
Correct Answer:
1 / m
Explanation:
Kinetic energy of alpha nucleus is equal to electrostatic potential energy of the system of the alpha particle and the heavy nucleus. That is,
1/2 mv² = 1/4π?￢ﾂﾀ . qαZe / r₀
where r₀ is the distance of closest approach
r₀ = 2/4π?￢ﾂﾀ . qαZe / mv²
r₀ ∞ Ze ∞ qα ∞ 1/m ∞ 1/v²
Hence option (c) is correct.
Related Questions: - A proton of mass 1.6×10⁻²⁷ kg goes round in a circular orbit of radius 0.10 m under
- If a vector 2i+3j+8k is perpendicular to the vector 4j-4i+αk, then value of α is
- when a magnetic field is applied on a stationary electron, then it
- If two vectors are equal in magnitude and their resultant is also equal in magnitude
- The focal length of the objective of a terrestrial telescope is 80 cm
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A proton of mass 1.6×10⁻²⁷ kg goes round in a circular orbit of radius 0.10 m under
- If a vector 2i+3j+8k is perpendicular to the vector 4j-4i+αk, then value of α is
- when a magnetic field is applied on a stationary electron, then it
- If two vectors are equal in magnitude and their resultant is also equal in magnitude
- The focal length of the objective of a terrestrial telescope is 80 cm
Topics: Atoms and Nuclei (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply