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प्रश्न
Why are anode rays also called as 'canal rays'?
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उत्तर
When perforated rays were used in the discharge tube, another set of rays travelling in a direction opposite to that of the cathode rays, i.e. from the anode towards the cathode, is seen, as in the figure below. These rays are called canal rays because they passed through the holes or canals in the cathode. These rays were named positive rays or anode rays.
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संबंधित प्रश्न
Goldstein's experiments which involved passing high voltage electricity through gases at very low pressure resulted in the discovery of :
Complete the table given below by identifying P, Q, R and S.
|
Element |
Symbol |
No. of Protons |
No. of neutrons |
No. of Electrons |
|
Sodium |
`""_11^23"NA"` |
11 |
P |
11 |
|
Chlorine |
`""_17^35"CI"` |
Q |
18 |
17 |
|
Uranium |
R |
92 |
146 |
92 |
|
S |
`""_9^19"F"` |
9 |
10 |
9 |
What is the significance of the number of protons found in the atoms of different elements?
Explain the following:
Mass of an atom is concentrated inside the nucleus of the atom.
Represent a proton ‘p’ in term of its symbol showing the subscript and superscript value.
Represent an electron ‘e’ in term of its symbol showing the subscript and superscript value.
Write the properties of anode rays.
A proton can be defined as a ______.
What are fluorescent materials?
The nature of anode rays depends upon ______.
