46. Who discovered the concept of the gravitational force?
a) Isaac Newton
b) James Clerk Maxwell
c) Galileo Galilei
d) Albert Einstein
Answer: a) Isaac Newton
47. Who discovered the concept of the strong nuclear force?
a) Hideki Yukawa
b) Isaac Newton
c) Galileo Galilei
d) James Clerk Maxwell
Answer: a) Hideki Yukawa
48. Who discovered the concept of the weak nuclear force?
a) Enrico Fermi
b) Isaac Newton
c) Galileo Galilei
d) James Clerk Maxwell
Answer: a) Enrico Fermi
49. Who discovered the concept of the Pauli exclusion principle?
a) Wolfgang Pauli
b) Isaac Newton
c) Galileo Galilei
d) James Clerk Maxwell
Answer: a) Wolfgang Pauli
50. Who discovered the concept of the Compton effect?
a) Arthur Compton
b) Isaac Newton
c) Galileo Galilei
d) James Clerk Maxwell
Answer: a) Arthur Compton
