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उत्तर
Cathode rays are used for:
(i) Converting electrical signal into a visual signal, (ii) In television.
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संबंधित प्रश्न
How can they be made to leave the metal surface? (State any two ways)
Under which conditions does the nucleus of an atom tend to radioactive?
State any two precautions to be taken while handling radioactive substances
What happens to the atomic number of element when (i) An α -particle, (ii) A β -particle 1 and (iii) γ-radiation is emitted?
A certain nucleus A (mass number 238 and atomic number 92) is radioactive and becomes a nucleus B (mass number 234 and atomic number 90) by the loss of one particle.
What particle was emitted?
What are cathode rays? Why are they called ‘cathode rays’? Name a material which exhibits fluorescence when cathode rays fall on it.
In a cathode ray tube state the purpose of the fluorescent screen.
Name the Different Radiations Which Are Emitted by the Radioactive Substances.
Are all the radiations mentioned by you, emitted in a single radioactive decay?
The count rate of activity of a radioactive sample of a very large population decreased from 1024 to 128 in 3 minutes. Then the rate of disintegration at the end of 5 minutes is ______.
