1. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

2. Who invented Laser ?

Answer:

Charles H. Townes

3. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.

4. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

5. Who invented Transformer ?

Answer:

Ottó Bláthy

6. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

7. Who invented Vitamin C ?

Answer:

Scottish naval surgeon James Lind in 1747