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Consider an electron, a neutron and a proton initially at rest and placed along a straight line such that the neutron is exactly at the center of the line joining the electron and proton. At t=0, the particles are released but are constrained to move along the same straight line. Which of these will collide first?
  • a)
    The particles will never collide
  • b)
    All will collide together
  • c)
    Proton and Neutron
  • d)
    Electron and Neutron
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Consider an electron, a neutron and a proton initially at rest and pla...
The Gravitational force of alteration between any two particles shown above is made much negligible when compared to coloumbic force of alteration between electron and proton.
Force of alteration
Due to this force, the electron as well as the proton will move towards each other, since 
mo << mp , the speed and acceleration of the electron will be much greater than that of proton. This causes electron to collide with the neutron faster when compared to proton.
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Most Upvoted Answer
Consider an electron, a neutron and a proton initially at rest and pla...
Explanation:
The particles in consideration are an electron, a neutron, and a proton, initially at rest and placed along a straight line such that the neutron is exactly at the center of the line joining the electron and proton. At t=0, the particles are released but are constrained to move along the same straight line. We need to determine which of these particles will collide first.

Analysis:
To analyze the motion of these particles, we can consider the forces acting on each particle.

- Electron: The electron is negatively charged, and the proton is positively charged. Therefore, there is an attractive Coulomb force between the electron and the proton. This force will cause the electron to accelerate towards the proton.

- Neutron: The neutron is electrically neutral, so there is no Coulomb force acting on it.

- Proton: The proton is positively charged, and the electron is negatively charged. Therefore, there is an attractive Coulomb force between the proton and the electron. This force will cause the proton to accelerate towards the electron.

Motion of the particles:
Based on the forces acting on each particle, we can determine their motion.

- Electron: The electron will accelerate towards the proton due to the attractive Coulomb force. Since the electron is initially at rest, it will start from rest and gain speed as it moves towards the proton.

- Neutron: The neutron is electrically neutral and does not experience any forces. Therefore, it will remain at rest throughout the motion.

- Proton: The proton will accelerate towards the electron due to the attractive Coulomb force. Since the proton is initially at rest, it will start from rest and gain speed as it moves towards the electron.

Collision:
Since both the electron and the proton are accelerating towards each other, they will eventually collide. The neutron, being at rest and not experiencing any forces, will remain at its initial position and not collide with any other particle.

Therefore, the correct answer is option 'D' - The electron and neutron will collide first.
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Consider an electron, a neutron and a proton initially at rest and placed along a straight line such that the neutron is exactly at the center of the line joining the electron and proton. At t=0, the particles are released but are constrained to move along the same straight line. Which of these will collide first?a)The particles will never collideb)All will collide togetherc)Proton and Neutrond)Electron and NeutronCorrect answer is option 'D'. Can you explain this answer?
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