| Date | November 2010 | Marks available | 2 | Reference code | 10N.3.SL.TZ0.G3 |
| Level | Standard level | Paper | Paper 3 | Time zone | Time zone 0 |
| Command term | Determine | Question number | G3 | Adapted from | N/A |
Question
This question is about a diffraction grating.
For a particular grating, the distance between adjacent slits is \(2.0 \times {10^{ - 6}}{\text{ m}}\). Determine, for light of wavelength 520 nm, the maximum theoretical order of diffraction.
Markscheme
\(n = \left( {\frac{d}{\lambda } = } \right){\text{ }}\left( {\frac{{2.0 \times {{10}^{ - 6}}}}{{5.2 \times {{10}^{ - 7}}}} = } \right){\text{ 3.85}}\);
so \(\max = 3\);
Examiners report
The application of the formula in part (b) was often done well.
