| Date | May 2013 | Marks available | 1 | Reference code | 13M.1.HL.TZ1.10 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 10 | Adapted from | N/A |
Question
Microwave ovens cause the water molecules in food to resonate. Water molecules have a natural frequency of vibration f. In order to heat the food most effectively, the frequency of the microwaves should have a value
A. less than f.
B. equal to f.
C. greater than f.
D. as large as possible.
Markscheme
B
Examiners report
[N/A]
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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