DP Physics (first assessment 2025)

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Question 23M.1A.SL.TZ1.29

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Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.1A.SL.TZ1.29
Level SL Paper 1A Time zone TZ1
Command term Question number 29 Adapted from N/A
29.
[Maximum mark: 1]
23M.1A.SL.TZ1.29

Two surfaces X and Y emit radiation of the same surface intensity. X emits a radiation of peak wavelength twice that of Y.

What is emissivity of Xemissivity of Y?


A.  116

B.  12

C.  2

D.  16

[1]

Markscheme

D

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