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.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
At point P, the proton experiences a change in velocity due to the deflection caused by the nucleus. Since momentum is given by the product of mass and velocity, and the velocity is changing, the rate of change of momentum can't be at a minimum at this point.
Step 2
B Its kinetic energy is at a minimum.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
At the closest approach to the nucleus (point P), kinetic energy might be momentarily reduced due to the influence of the nucleus but it actually is not at its minimum. Hence, this statement cannot be confirmed as true.
Step 3
C Its potential energy is at a maximum.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
At point P, the proton is closest to the nucleus, leading to maximum potential energy due to the electrostatic interaction between the proton and the nucleus.
Step 4
D Its acceleration is at a maximum.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
As the proton is closest to the nucleus, the electrostatic force acting on it is greatest at this point, resulting in maximum acceleration.
