Question:
What is present in cathode rays?
What is present in cathode rays?
Show Hint
Cathode rays are streams of electrons emitted from the negative electrode (cathode) in a vacuum tube.
Updated On: Oct 27, 2025
- Electron
- Proton
- Neutron
- None of these \bigskip
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Cathode rays consist of negatively charged electrons. They were discovered by J.J. Thomson using a cathode ray tube, leading to the identification of the electron.
Was this answer helpful?
0
0
Top Questions on Structure of atom
- The energy associated with electron in first orbit of hydrogen atom is \(-2.18 \times 10^{-18}\) J. The frequency of the light required (in Hz) to excite the electron to fifth orbit is (\(h=6.6 \times 10^{-34}\) Js)
- TS EAMCET - 2025
- Chemistry
- Structure of atom
- Isotopes of an element have a different number of
- UPCATET - 2025
- Physics
- Structure of atom
- The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom is –
- UPCATET - 2025
- Physics
- Structure of atom
- An element 'M' has 25% of the electrons filled in the third shell as in the second shell. The element 'M' is :
- CBSE Class X - 2025
- Science
- Structure of atom
- Which of the following is correct about the stability of half-filled and completely filled subshells?
(i) Relatively small shielding
(ii) Larger coulombic repulsion energy
(iii) Smaller exchange energy
(iv) Smaller coulombic repulsion energy
(v) Larger exchange energy- KEAM - 2025
- Chemistry
- Structure of atom
View More Questions
Questions Asked in Bihar Class X Board exam
- One day the old emperor Shah Jahan became ill. His son Aurangzeb, who always wanted to be the emperor, put his father in a jail. Jahanara Begum, the eldest child of Shah Jahan, did not leave her father and went to jail along with him. She said, “I shall share the suffering of my father. He needs me in his old age, and I shall never leave him.” Shah Jahan spent seven years in jail before dying. During that period, Princess Jahanara stayed there and took care of him. After the death of her father, she returned to her own palace and continued to live there till her death. Before her death, however, she gave away all she had to the needy and the poor. Upon her death, Aurangzeb gave her the posthumous title : Sahibat-uz-Zamani (mistress of age).
- Bihar Board X - 2025
- Reading Comprehension
- Choose the passive voice of : “Have this lock broken.”
- Choose the most suitable translation : वे लोग विद्यालय जा चुके हैं।
- Bihar Board X - 2025
- Comparative Literature and Translations Studies
- Choose the most suitable translation : उसने मुझे सोया हुआ पाया।
- Bihar Board X - 2025
- Comparative Literature and Translations Studies
- Choose the most suitable translation : नियमित रूप से अध्ययन करो।
- Bihar Board X - 2025
- Comparative Literature and Translations Studies
View More Questions