Q153 · Practice questionComplex familiar1 mark
QUESTION 153
A meson consists of an up quark and an anti-down quark. Up and down quarks have charges and , respectively. What are the meson's charge and baryon number?
(A)
,
(B)
,
(C)
,
(D)
,
WORKED SOLUTION
1 markAnswer A
ANSWER
A. ,
Worked solution
The anti-down charge is , so total charge is . The baryon number is .
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 A.
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