1. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

2. Who invented Atomic Bomb ?

Answer: J. Robert Oppenheimer of U.S.A. in 1945

3. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948

4. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

5. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

6. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832

7. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.