DP Physics (first assessment 2025)

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Question 23M.2.SL.TZ2.3bii

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Date May 2023 Marks available [Maximum mark: 2] Reference code 23M.2.SL.TZ2.3bii
Level SL Paper 2 Time zone TZ2
Command term Discuss Question number ii Adapted from N/A
ii.
[Maximum mark: 2]
23M.2.SL.TZ2.3bii
(ii)

The student moves the screen closer to the double slit and repeats the measurements. The instruments used to make the measurements are unchanged.

Discuss the effect this movement has on the fractional uncertainty in the value of λ.

[2]

Markscheme

«As the measurements decrease» the fractional uncertainty in D/s increases. ✓

«Fractional uncertainties are additive here» so fractional uncertainty in λ increases ✓

Answers can be described in symbols e.g. Δs/s

Syllabus sections