Question
Download Solution PDFCathode rays are a beam of:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is electrons.
Key Points
- Cathode rays are beams of electrons generated in a vacuum tube.
- The beam of electrons travels from the negatively charged electrode at one end to the positively charged electrode at the other, across a voltage difference between the electrodes.
- The positively charged electrode is known as anode.
- The negatively charged electrode is known as cathode.
Important Points
- The Vacuum tube is a device consist of electrodes sealed in a glass or metal-ceramic enclosure used in an electronic circuit to control a flow of electrons.
- The Vacuum tube is also known as Electron tube.
- Cathode-ray tubes, Phototubes, Magnetrons, Klystrons, Gyrotrons, and Fluorescent lamps are some examples of Vacuum tube.
Additional Information
| Particle | Discovered by | Year | Charge | Mass |
| Electron | J. J. Thomson | 1897 | −1.6×10−19 | 9.1×10-31 Kg |
| Proton | Eugen Goldstein | 1917 | +1.6×10−19 | 1.67×10−27 kg |
| Neutron | James Chadwick | 1932 | 0 | 1.67×10−27 kg |
| Positron | Carl D. Anderson | 1932 | +1.6×10−19 | 9.1×10-31 Kg |
Last updated on Jun 17, 2025
-> The SSC has now postponed the SSC CPO Recruitment 2025 on 16th June 2025. As per the notice, the detailed notification will be released in due course.
-> The Application Dates will be rescheduled in the notification.
-> The selection process for SSC CPO includes a Tier 1, Physical Standard Test (PST)/ Physical Endurance Test (PET), Tier 2, and Medical Test.
-> The salary of the candidates who will get successful selection for the CPO post will be from ₹35,400 to ₹112,400.
-> Prepare well for the exam by solving SSC CPO Previous Year Papers. Also, attempt the SSC CPO Mock Tests.
-> Attempt SSC CPO Free English Mock Tests Here!