ICSE Class 7 Answered
Briefly decribe the discovery of cathode rays with diagram
Asked by adityarajput9143.8sdatl | 03 May, 2020, 10:15: AM
Expert Answer
- A British scientist J.J. Thomson was the first one to discover the electron in the year 1897.
- J.J. Thomson performed an experiment to know the characteristics and constituents of the cathode rays.
- Thomson passed electricity at a high voltage through the discharge tube containing a gas at a very low pressure. A green fluorescence was seen coming out from the other end of the discharge tube.
- This fluorescence is the result of rays emitted from the cathode (negative plate) towards the anode (positive plate) in the discharge tube. Hence, these rays are called as cathode rays.
- The mass and charge of the cathode ray particles does not depend on the gas taken in the discharge tube.
Answered by | 03 May, 2020, 09:22: PM
Concept Videos
-
Metals and Non-Metals
Metals and Non-Metals, Physical Properties of Metals and Non-Metals -
Metals and Non-Metals
Metals and Non-Metals, Physical Properties of Metals and Non-Metals -
Metals and Non-Metals
Metals and Non-Metals, Chemical Properties of Metals and Non-Metals -
Metals and Non-Metals
Metals and Non-Metals, Chemical Properties of Metals and Non-Metals
ICSE 7 - Chemistry
Asked by agandole | 05 Mar, 2022, 08:00: PM
ANSWERED BY EXPERTICSE 7 - Chemistry
Asked by amarnathchaurasiya417 | 22 Feb, 2021, 11:12: PM
ANSWERED BY EXPERTICSE 7 - Chemistry
Asked by goluaarbeecrj | 17 Feb, 2021, 01:01: PM
ANSWERED BY EXPERTICSE 7 - Chemistry
Asked by rishabhambadi86.7spicertl | 11 Jun, 2020, 11:22: AM
ANSWERED BY EXPERTICSE 7 - Chemistry
Asked by adityarajput9143.8sdatl | 03 May, 2020, 10:15: AM
ANSWERED BY EXPERTICSE 7 - Chemistry
Asked by jainishgohel3700.7sdatl | 24 Apr, 2020, 02:54: PM
ANSWERED BY EXPERTICSE 7 - Chemistry
Asked by chrisjtinagil | 02 Mar, 2020, 03:57: PM
ANSWERED BY EXPERTICSE 7 - Chemistry
Asked by ahmadwasim200 | 28 Feb, 2020, 10:55: PM
ANSWERED BY EXPERT
