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Question 23M.1.SL.TZ1.27

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Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.1.SL.TZ1.27
Level SL Paper 1 Time zone TZ1
Command term Question number 27 Adapted from N/A
27.
[Maximum mark: 1]
23M.1.SL.TZ1.27

This interaction between a proton and a pion violates two or more conservation laws.

p + π− → K− + π+

Quark composition of particles:

π− = d 
u, π+ = u 
d, K− = s 
u, p = u u d

Which laws are violated by this interaction?

I.    Conservation of charge
II.   Conservation of strangeness
III.  Conservation of baryon number


A.  I and II only

B.  I and III only

C.  II and III only

D.  I, II and III

[1]

Markscheme

C