1. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

2. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

3. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

4. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

5. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

6. Who invented Submarine ?

Answer:

John Philip Holland

7. Who invented Transistor ?

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