DP Physics (first assessment 2025)

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Question 22M.1A.SL.TZ2.22

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.SL.TZ2.22
Level SL Paper 1A Time zone TZ2
Command term Question number 22 Adapted from N/A
22.
[Maximum mark: 1]
22M.1A.SL.TZ2.22

White light is emitted from a hot filament. The light passes through hydrogen gas at low pressure and then through a diffraction grating onto a screen. A pattern of lines against a background appears on the screen.

What is the appearance of the lines and background on the screen?

[1]

Markscheme

D

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