1. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

2. Who invented by Electric Lamp ?

Answer: Thomas Alva Edison of U.S.A. in 1879

3. Who invented Safety razor ?

Answer: King Camp Gillette of U.S.A. in 1903

4. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

5. Who invented Bleaching Powder ?

Answer: Tennant of Britain in 1798

6. Who invented Submarine ?

Answer:

John Philip Holland

7. Who invented colour television ?

Answer:

Peter Carl Goldmark