Quarks and antiquarks

Quarks and antiquarks Quiz

Spec 3.2.1.6 · AQA A-Level Physics: Quiz

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5 questions, one answer each

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  1. 1. What is the charge of a proton in terms of its quarks?

    • A. +2/3 + 2/3 − 1/3 = +1
    • B. +2/3 − 1/3 − 1/3 = 0
    • C. −2/3 − 2/3 + 1/3 = −1
    • D. +2/3 + 1/3 = +1

  2. 2. Which quark combination is the K⁺?

    • A. uˉ\bar{u} s
    • B. d sˉ\bar{s}
    • C. u sˉ\bar{s}
    • D. u dˉ\bar{d}

  3. 3. What is the strangeness of the K⁻ (uˉ\bar{u} s)?

    • A. +1
    • B. −1
    • C. 0
    • D. −2

  4. 4. What is the baryon number of a meson?

    • A. +1
    • B. −1
    • C. +1/3
    • D. 0

  5. 5. In neutron decay, which quark change takes place?

    • A. Up to down
    • B. Down to up
    • C. Strange to up
    • D. Up to strange

Quiz