Question 6:
Electron was discovered in the year 1897 by __.
SSC-CGL 07/06/19 (Afternoon)
A. T. A. Edison
B. Nikola Tesla
C. J J Thomson
D. Isaac Newton
Answer:
Answer: C. J.J. Thomson
Detailed Solution:
- J.J. Thomson discovered the electron in 1897.
- He was a British physicist known for his work on electricity and atomic structure.
- Thomson made his discovery while experimenting with cathode rays (streams of electrons) in a special glass tube called a cathode ray tube.
- His experiments showed that these rays were made up of small, negatively charged particles – later named electrons.
- Before this, atoms were thought to be indivisible, but Thomson’s discovery proved that atoms contain even smaller parts.
- He received the Nobel Prize in Physics in 1906 for his work on the electron and its properties.
Why the other options are incorrect:
- T.A. Edison: Famous inventor, known for creating the light bulb, but did not discover electrons.
- Nikola Tesla: Known for his contributions to electricity and electromagnetism, but not the electron.
- Isaac Newton: Known for laws of motion and gravity, but not involved in the discovery of electrons.
Thus, the correct answer is C. J.J. Thomson.
