Exam-style question
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What is the formula used to calculate the angle of diffraction for a diffraction grating?.
- A.d sin(θ) = nλ
- B.λ = d sin(θ)
- C.n = d / (λ sin(θ))
- D.θ = nλ / d
Model answer
What a good answer should say
- d sin(θ) = nλ
Explanation
Why this works
The formula d sin(θ) = nλ describes the relationship between the grating spacing (d), the angle of diffraction (θ), the order of the maximum (n), and the wavelength (λ). This is fundamental in analyzing spectra using diffraction gratings, as it allows us to determine how light is diffracted based on its wavelength.
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