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उत्तर
Cathode rays are used for:
(i) Converting electrical signal into a visual signal, (ii) In television.
संबंधित प्रश्न
When does the nucleus of an atom tend to become radioactive?
What do you mean by Mass number.
Define free electrons.
How is a cathode ray beam affected while passing through an electric field?
What are cathode rays? Why are they called ‘cathode rays’? Name a material which exhibits fluorescence when cathode rays fall on it.
Name the Different Radiations Which Are Emitted by the Radioactive Substances.
Are all the radiations mentioned by you, emitted in a single radioactive decay?
From α, β and γ-rays, name the one which travels with the speed of light?
Two radioactive materials A and B have decay constants 25λ and 16λ respectively. If initially they have the same number of nuclei, then the ratio of the number of nuclei of B to that of A will be "e" after a time `1/("a"lambda)` The value of a ______.
Calculate the time interval between 33% decay and 67% decay if half-life of a substance is 20 minutes.
A radioactive element is placed in an evacuated chamber. Then the rate of radioactive decay will ______.
