DP Physics (first assessment 2025)

Question EXE.2.HL.TZ0.2ci

Date	Example questions Example questions	Marks available	[Maximum mark: 2]	Reference code	EXE.2.HL.TZ0.2ci
Level	HL	Paper	2	Time zone	TZ0
Command term	Show that	Question number	i	Adapted from	N/A

[Maximum mark: 2]

EXE.2.HL.TZ0.2ci

(i)

Show that, when sound travels from clay to sandstone, the critical angle is approximately 40°.

[2]

Markscheme

_cn_s $= \frac{3.0}{4.7} = 1.57$ ✓

Critical angle $= \sin^{- 1} (\frac{1}{1.57}) = 39.6 °$ ✓

Syllabus sections