A. Samuel Cohen
B. Narinder Kapany
C. Percy L.Spencer
D. T.H. MaimahA
- When was helicopter Invented?
- The US president who invented the swivel chair, the spherical sundial, the moldboard plow, and the cipher wheel was___________?
- Eyeglasses are invented in Italy in________?
- The World Wide Web was invented by____________?
- In 1940, first electronic computer was invented by_______?
- The Battery was invented by?
- Bulb was invented by?
- Jet Engine was invented by_____________?
- Radio was invented by_____________in 1895?
- Who invented the safety pin?
- Optical Instruments MCQs
- Edwin Budding who invented Lawnmover belongs to__________?