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Date	May 2021	Marks available	1	Reference code	21M.1.HL.TZ2.29
Level	Higher level	Paper	Paper 1	Time zone	2
Command term		Question number	29	Adapted from	N/A

Question

Monochromatic light of wavelength $λ$ passes through a single-slit of width $b$ and produces a diffraction pattern on a screen. Which combination of changes to $b$ and $λ$ will cause the greatest decrease in the width of the central maximum?

Markscheme

C

Examiners report

[N/A]

Syllabus sections

Additional higher level (AHL) » Topic 9: Wave phenomena » 9.2 – Single-slit diffraction

22M.1.HL.TZ1.30:
Light of wavelength $λ$ is diffracted after passing through a very narrow single slit of width $x$ . The intensity of the central maximum of the diffracted light is $I_{0}$ . The slit width is doubled.

What is the intensity of central maximum and the angular position of the first minimum?
19N.1.HL.TZ0.27: Light of frequency 500 THz is incident on a single slit and forms a diffraction pattern. The...
21N.1.HL.TZ0.27: When monochromatic light is incident on a single slit a diffraction pattern forms on a...
19N.2.HL.TZ0.10c(i): Draw, on the axes, the variation with diffraction angle of the intensity of light incident on...
17N.2.HL.TZ0.6a.iii:
Calculate the separation of the two slits.
21M.1.HL.TZ1.27:
The diagram shows the diffraction pattern for light passing through a single slit.

What is

$\frac{wavelength of light}{width of slit}$

A. 0.01

B. 0.02

C. 1

D. 2
19M.2.HL.TZ2.8cii:
Show that, due to single slit diffraction, the intensity at a point on the screen a distance of 28 mm from M is zero.
18M.1.HL.TZ2.25: A beam of monochromatic light is incident on a single slit and a diffraction pattern forms...

Additional higher level (AHL) » Topic 9: Wave phenomena

Additional higher level (AHL)