600-nm light is incident on a diffraction grating with a ruling separation of 1.7 10 m. The second order line occurs at a diffraction angle of: 42 45° 21° 10°

Question

Physics

Joyce Higgins

Today, 00:37

600-nm light is incident on a diffraction grating with a ruling separation of 1.7 10 m. The second order line occurs at a diffraction angle of: 42 45° 21° 10°

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Answers (1)

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Peter Little · Answer 1

45°

Explanation:

λ = 600 nm = 600 x 10^-9 m

d = 1.7 x 10^-6 m

For second order, N = 2

Use the equation

d Sinθ = N λ

1.7 x 10^-6 x Sinθ = 2 x 600 x 10^-9

Sinθ = 0.706

θ = 45°

Thus, the angle of diffraction is 45°.