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Question 19M.1.HL.TZ2.34

Date	May 2019	Marks available	[Maximum mark: 1]	Reference code	19M.1.HL.TZ2.34
Level	HL	Paper	1	Time zone	TZ2
Command term		Question number	34	Adapted from	N/A

34.

[Maximum mark: 1]

19M.1.HL.TZ2.34

The ${\pi ^ + }$ meson contains an up ( $u$ ) quark. What is the quark structure of the ${\pi ^ - }$ meson?

A. $u d$

B. $u\bar d$

C. $\bar ud$

D. $\bar u\bar d$

[1]

Markscheme

C

Syllabus sections

Core » Topic 7: Atomic, nuclear and particle physics » 7.3 – The structure of matter

Core » Topic 7: Atomic, nuclear and particle physics