DP Physics (first assessment 2025)

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Question 23M.1A.SL.TZ2.21

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Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.1A.SL.TZ2.21
Level SL Paper 1A Time zone TZ2
Command term Question number 21 Adapted from N/A
21.
[Maximum mark: 1]
23M.1A.SL.TZ2.21

White light is incident on gas at very low pressure. The light passing through the gas is analysed.

What phenomenon is being investigated?


A.  Absorption spectrum

B.  Emission spectrum

C.  Photoelectric effect

D.  Diffraction

[1]

Markscheme

A

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