Discoveries in Physics

26. Who discovered the concept of the photoelectric effect?
a) Albert Einstein
b) Isaac Newton
c) Galileo Galilei
d) James Clerk Maxwell

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27. Who discovered the concept of the double-slit experiment?
a) Thomas Young
b) Isaac Newton
c) Galileo Galilei
d) James Clerk Maxwell

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28. Who discovered the concept of radioactivity?
a) Marie Curie
b) Pierre Curie
c) Antoine Becquerel
d) Ernest Rutherford

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29. Who discovered the neutron?
a) James Chadwick
b) Marie Curie
c) Pierre Curie
d) Antoine Becquerel

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30. Who discovered the electron?
a) J.J. Thomson
b) Marie Curie
c) Pierre Curie
d) Antoine Becquerel

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