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Question 21M.2.HL.TZ2.8a.ii

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.2.HL.TZ2.8a.ii
Level HL Paper 2 Time zone TZ2
Command term State Question number a.ii Adapted from N/A
a.ii.
[Maximum mark: 1]
21M.2.HL.TZ2.8a.ii

Monochromatic light of wavelength λ is normally incident on a diffraction grating. The diagram shows adjacent slits of the diffraction grating labelled V, W and X. Light waves are diffracted through an angle θ to form a second-order diffraction maximum. Points Z and Y are labelled.

  

(a.ii)

State, in terms of λ, the path length between points X and Z.

[1]

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4λ ✓

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