36. Who discovered the concept of the cyclotron?
a) Ernest O. Lawrence
b) Marie Curie
c) Pierre Curie
d) Antoine Becquerel
Answer: a) Ernest O. Lawrence
37. Who discovered the concept of the Michelson-Morley experiment?
a) Albert Michelson and Edward Morley
b) Marie Curie
c) Pierre Curie
d) Antoine Becquerel
Answer: a) Albert Michelson and Edward Morley
38. Who discovered the concept of the photoelectric effect?
a) Albert Einstein
b) Isaac Newton
c) Galileo Galilei
d) James Clerk Maxwell
Answer: a) Albert Einstein
39. Who discovered the concept of Brownian motion?
a) Robert Brown
b) Isaac Newton
c) Galileo Galilei
d) James Clerk Maxwell
Answer: a) Robert Brown
40. Who discovered the concept of the wave-particle duality?
a) Louis de Broglie
b) Isaac Newton
c) Galileo Galilei
d) James Clerk Maxwell
Answer: a) Louis de Broglie
