| Date | November 2011 | Marks available | 1 | Reference code | 11N.1.sl.TZ0.6 |
| Level | SL | Paper | 1 | Time zone | TZ0 |
| Command term | Identify | Question number | 6 | Adapted from | N/A |
Question
Which statement about the electromagnetic spectrum is not correct?
A. The wavelength of ultraviolet radiation is shorter than infrared radiation.
B. The frequency of visible radiation is higher than the frequency of ultraviolet radiation.
C. The energy of infrared radiation is lower than the energy of ultraviolet radiation.
D. Wavelength is inversely proportional to frequency.
Markscheme
B
Examiners report
In one G2 comment it was stated that this question was more physics in nature. However, AS 2.3.1 states that candidates should be able to describe the electromagnetic spectrum (EMS) and in the corresponding TN for this AS, it is clearly indicated that variations in wavelength, frequency and energy in the UV, Vis and IR regions of the EMS should be known. 62% of candidates got the correct answer to the question, namely, B.
Syllabus sections
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