| Date | May 2013 | Marks available | 1 | Reference code | 13M.1.HL.TZ2.12 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 12 | Adapted from | N/A |
Question
Two oscillators X and Y are undergoing forced oscillations each at a frequency close to the natural frequency of each oscillator. The graph shows the variation of amplitude with forcing frequency for each oscillator.
Which of the following correctly identifies the system that has the greater amount of damping and the
greater natural frequency of oscillation?
Markscheme
D
Examiners report
This question elicited a number of comments on the G2s and the statistics showed that the topic had been sufficiently understood by only the better candidates. These two systems were clearly not identical – otherwise they would have had the same y-intercept. Y had a blunter peak which was visibly to the right of X’s peak, making D the best answer.
Syllabus sections
Option B: Engineering physics » Option B: Engineering physics (Additional higher level option topics) » B.4 – Forced vibrations and resonance (HL only)
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