. A charged particle q is shot towards another charged
particle Q which is fixed, with a speed v. It approaches Q upto a closest distance r and then returns. If q was given a speed 2v, the closest distance of approach would be:
A: r
B: 2r
C: r/2
D: r/4
Best Answer
Explanation:
- In the first case, q was shot with speed v and closest distance is r. Applying conservation of energy,
Final answer:
Hence the correct option is D, i.e. r/4
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