The diagram shows the path of a proton being deflected by the nucleus of an atom - AQA - A-Level Physics - Question 26 - 2021 - Paper 2
Question 26
The diagram shows the path of a proton being deflected by the nucleus of an atom. Point P is the position of the proton when it is closest to the nucleus.
What is n... show full transcript
Worked Solution & Example Answer:The diagram shows the path of a proton being deflected by the nucleus of an atom - AQA - A-Level Physics - Question 26 - 2021 - Paper 2
Step 1
A Its rate of change of momentum is at a minimum.
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Answer
At point P, the proton is undergoing a change in direction, which indicates a change in momentum. Therefore, this statement is true.
Step 2
B Its kinetic energy is at a minimum.
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Answer
At point P, the proton has the greatest speed as it is at the closest approach to the nucleus where it is deflected. Hence, this statement is not true.
Step 3
C Its potential energy is at a maximum.
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Answer
At point P, the proton is closest to the nucleus, where the electrostatic potential energy is indeed at a maximum due to the proximity to the positive charge of the nucleus.
Step 4
D Its acceleration is at a maximum.
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Answer
The acceleration of the proton is greatest at the point of closest approach due to the strong electric field produced by the nucleus. Therefore, this statement is true.
