1. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

2. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

3. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

4. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

5. Who invented Submarine ?

Answer:

John Philip Holland

6. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

7. Who invented Computer ?

Answer:

Charles Babbage