11. Who discovered the law of reflection of light?
a) Isaac Newton
b) Galileo Galilei
c) Johannes Kepler
d) Christiaan Huygens
Answer: d) Christiaan Huygens
12. Who discovered the law of refraction of light?
a) Isaac Newton
b) Galileo Galilei
c) Johannes Kepler
d) Christiaan Huygens
Answer: a) Isaac Newton
13. Who discovered the first law of motion?
a) Isaac Newton
b) Galileo Galilei
c) Johannes Kepler
d) Christiaan Huygens
Answer: a) Isaac Newton
14. Who discovered the second law of motion?
a) Isaac Newton
b) Galileo Galilei
c) Johannes Kepler
d) Christiaan Huygens
Answer: a) Isaac Newton
15. Who discovered the third law of motion?
a) Isaac Newton
b) Galileo Galilei
c) Johannes Kepler
d) Christiaan Huygens
Answer: a) Isaac Newton