Which of the following are not relativistically invariant quantities?
a. the speed of light, c b. time
c. mass d. energy
[Ques. 2] Which of the following is considered anitmatter?
a. u b. e
c. e+ d. d
[Ques. 3] Mesons are composed of
a. antiquarks. b. quark-antiquark pairs.
c. quarks. d. three-quark combinations.
[Ques. 4] Which of the following particle is unaffected by the strong force?
a. protons b. neutrons
c. mesons d. gauge bosons
[Ques. 5] The spins of all known particles are either integral or half-integral multiples of
a. the baryon number. b. Plank's constant.
c. the Gravitational constant. d. the speed of light.
[Ques. 6] Which of the following is not a fundamental force of nature?
a. strong nuclear force b. electroweak force
c. weak nuclear force d. electromagnetic interaction
[Ques. 7] A quantum number for a quark is
a. strangeness.
b. beauty.
c. charm.
d. truth.
e. all of the above.
[Ques. 8] Quarks are bound together in hadrons by
a. the strong force. b. the weak force.
c. intermediate (or gauge) bosons. d. the color force.
[Ques. 9] 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. 10] 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.
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