DP Physics (first assessment 2025)

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Question 22N.1A.SL.TZ0.27

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1A.SL.TZ0.27
Level SL Paper 1A Time zone TZ0
Command term Question number 27 Adapted from N/A
27.
[Maximum mark: 1]
22N.1A.SL.TZ0.27

The electromagnetic spectrum radiated by a black body at temperature T shows a peak at wavelength λp.

What is the variation of λp with T?


[1]

Markscheme

A

Examiners report

A large proportion of the candidates, especially at SL, picked the incorrect alternative D, probably triggered by the shape of the graph being similar to the spectral distribution of black-body radiation. The question required an application of Wien's law and the inverse proportionality of the peak wavelength with temperature.

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