- Bike
- Monitor
- Cycle
- None of these
- b
-
Plucker discovered the Cathode Rays in 1858.
Cathode Rays Tube (CRT) was invented in 1897 by German Scientist Ferdinend Braun.
Plucker discovered the Cathode Rays in 1858.
Cathode Rays Tube (CRT) was invented in 1897 by German Scientist Ferdinend Braun.