| Date | May 2014 | Marks available | 1 | Reference code | 14M.1.HL.TZ1.23 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 23 | Adapted from | N/A |
Question
Two negatively charged particles are released from rest half-way between two oppositely charged parallel plates in vacuum.
The particles take the same time to reach the positively charged plate. The particles must have the same
A. charge only.
B. mass only.
C. mass and charge.
D. ratio of mass to charge.
Markscheme
D
Examiners report
Same time....same acceleration......same (F/m). Hence it can only be D. Many candidates directly identified force with acceleration and chose A.
Syllabus sections
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