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प्रश्न
Answer the following questions based on a hot cathode ray tube.
State the approximate voltage used to heat the filament
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उत्तर
The filament is heated by a filament connected to a low-tension battery of about 6 V.
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संबंधित प्रश्न
Answer the following questions based on a hot cathode ray tube
Name the charged particles
What is thermionic emission?
An electromagnetic radiation is used for photography in fog. [2]
(i) Identify the radiation.
(ii) Why is this radiation mentioned by you, ideal for this purpose ?
What happens to the mass number of an element when (i) an α -particle, (ii) a β -particle, and (iii) γ -radiation is emitted?
What kind of change takes place in a nucleus when a β -particle is emitted?
State two characteristics of the substance used as thermionic emitter.
In a cathode ray tube state the purpose of covering cathode by thorium and carbon.
What do you understand by the term radioactivity?
It is advised not to touch a radioactive substance by hand. Give reason.
Mention four properties of Becquerel rays.
