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8.4 The diffraction grating · Fathom

Subjects
Physics
8.4 The diffraction grating

8 SuperpositionAS Level

8.4 The diffraction grating

2 of 2 objectives have lessons · 0 studied · 0 secure

Lessons

The diffraction grating equationA grating has thousands of equally spaced slits. Maxima appear only at angles that satisfy d sin θ = nλ. 8 min, not started
Measuring wavelength with a gratingMeasure the angle of a bright order, find sin θ, and d sin θ = nλ gives the wavelength to three significant figures. 7 min, not started

Syllabus objectives

2 objectives

What Cambridge says you should be able to do, in our words. Codes are the topic number plus the objective’s position.

8.4.1

Recall and use d sin θ = nλ.

Taught in: The diffraction grating equation · 6 questions

8.4.2

Describe how a diffraction grating is used to determine the wavelength of light.

The structure and use of a spectrometer are excluded.

Taught in: Measuring wavelength with a grating · 6 questions