A quantum number for a quark is
a. strangeness
b. beauty
c. charm
d. truth
e. all of the above
[Ques. 2] Quarks are bound together in hadrons by
a. the strong force c. intermediate (or gauge) bosons
b. the weak force d. the color force
[Ques. 3] The fundamental particles that are the building blocks of hadrons are
a. leptons
b. baryons
c. mesons
d. intermediate (or gauge) bosons
e. quarks
[Ques. 4] Steven Weinberg, Abdus Salam, and Sheldon Glashow shared the 1979 Nobel prize in physics for their development of a(n)
a. electroweak theory
b. GUT
c. quark theory
d. generalized theory of relativity
e. theory of strangeness
[Ques. 5] A model for combining the electromagnetic, weak and strong nuclear interactions into a single basic force is a(n)
a. electroweak theory
b. GUT
c. quark theory
d. generalized theory of relativity
e. theory of strangeness
[Ques. 6] Conservation of ____________ is observed in strong and electromagnetic interactions but not in weak interactions.
a. baryon number
b. lepton number
c. strangeness
d. charm
e. beauty
[Ques. 7] Conservation of ___________ is observed in all interactions.
a. baryon number
b. lepton number
c. strangeness
d. charm
e. beauty
[Ques. 8] A force-carrying particle is a(n)
a. lepton
b. baryon
c. meson
d. intermediate (or gauge) boson
e. hadron
[Ques. 9] Why do strange particles have long lifetimes compared to other strongly interacting particles?
a. No one knowsthis is why they are called strange..
b. They only decay via the weak interaction.
c. They are more massive.
d. none of the above
[Ques. 10] A spin-1/2 particle that does not interact via the strong interaction is a(n)
a. lepton
b. baryon
c. meson
d. intermediate (or gauge) boson
e. hadron
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