9702 · topic questions
The diffraction grating
6 past-paper questions on The diffraction grating
The light has wavelength 520 nm. The separation of the lines in the grating is 3.8 × 10⁻⁶m. Determine the total number of bright…
Practise the full question →Calculate the number of lines per unit length in the diffraction grating.
Practise the full question →Use your answers in (b)(i) and (b)(ii) to calculate θ.
Practise the full question →Light of wavelength 720 nm in a vacuum is incident normally on a diffraction grating as shown in Fig. 6.1. A screen is parallel…
Practise the full question →The light in Fig. 6.1 is now replaced with light of a different wavelength λ. It is observed that the third-order maxima of this…
Practise the full question →State and explain the effect of this change on the number of bright fringes formed on the screen. A calculation is not required.
Practise the full question →
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