Q221 · Practice questionComplex familiar1 mark
QUESTION 221
Quarks and have charges and , respectively. Which pair forms a meson with charge ?
(A)
(B)
(C)
(D)
WORKED SOLUTION
1 markAnswer B
ANSWER
B.
Worked solution
A meson contains a quark and an antiquark. The anti-down charge is , so has . The other listed pairs have charges , and .
Equivalent physically justified methods and consistent equivalent units accepted.
Displayed decimals are model answers; accept appropriate significant figures and consistent rounding from stated constants.
Select B.
Practice question aligned to the current QCAA syllabus; review the worked solution and marking criteria.
View the QCAA syllabus