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Date May 2012 Marks available 1 Reference code 12M.1.HL.TZ1.28
Level Higher level Paper Paper 1 Time zone Time zone 1
Command term Question number 28 Adapted from N/A

Question

Light of a particular wavelength and intensity does not cause photoelectric emission from a clean metal surface in a vacuum. Which of the following changes to the light might cause photoelectric emission?


A. Increase the intensity
B. Decrease the intensity
C. Increase the wavelength
D. Decrease the wavelength

Markscheme

D

Examiners report

[N/A]

Syllabus sections

Additional higher level (AHL) » Topic 12: Quantum and nuclear physics » 12.1 – The interaction of matter with radiation
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