Fundamental Particles (OCR A Level Physics)

Exam Questions

4 mins4 questions
11 mark

Which column A, B, C or D, shows the correct sequence for the evolution of the Universe between the Big Bang and the formation of stars?

A

B

C

D

Universe starts to expand

quarks and leptons form

hadrons form

nuclei form

atoms form

Universe starts to expand

hadrons form

quarks and leptons form

nuclei form

atoms form

quarks and leptons form

nuclei form

Universe starts to expand

atoms form

hadrons form

quarks and leptons form

hadrons form

Universe starts to expand

nuclei form

atoms form

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    11 mark

    The table below shows the quark compositions of four particles A, B, C and D.

    A

    B

    C

    D

    u u d

    u d d

    u d s

    s s s

    Which particle has a positive charge?

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      21 mark

      Which statement is correct?

      • Hadrons are made up of protons and neutrons.

      • A positron and a proton are examples of leptons.

      • The positron and the electron have the same mass.

      • The weak nuclear force is responsible for alpha-decay.

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      31 mark

      Which lepton is emitted in the decay of an up quark and is affected by a magnetic field?

      • neutrino

      • electron

      • positron

      • antineutrino

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