DP Physics (first assessment 2025)

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Question 19M.2.HL.TZ1.c

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.2.HL.TZ1.c
Level HL Paper 2 Time zone TZ1
Command term Outline Question number c Adapted from N/A
c.
[Maximum mark: 1]
19M.2.HL.TZ1.c

Outline one reason why the maxima observed at W, X and Y will have different intensities from each other.

[1]

Markscheme

intensity is modulated by a single slit diffraction envelope OR

intensity varies with distance OR points are different distances from the slits ✔

Examiners report

This is one of many questions on this paper where candidates wrote vague answers that did not clearly connect to physics concepts or include key information. There were many overly simplistic answers like “they are farther away” without specifying what they are farther away from. Candidates should be reminded that their responses should go beyond the obvious and include some evidence of deeper understanding.

Syllabus sections