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प्रश्न
Name a common device where a hot cathode ray tube is used.
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उत्तर
Hot cathode ray tube is used in T.V.
संबंधित प्रश्न
Answer the following questions based on a hot cathode ray tube
Name the charged particles
What happens to the atomic number of element when (i) An α -particle, (ii) A β -particle 1 and (iii) γ-radiation is emitted?
Define bound electrons.
How is a zinc sulphide screen affected when a cathode ray beam strikes it?
Explain, why radium paint, consisting of zinc sulphide and a trace of radium salt, glows in the dark?
Unit of radioactivity is _______
The half-life of a radioactive nuclide is 100 hours. The fraction of original activity that will remain after 150 hours would be ______.
The mean lives of a radioactive substance are 1620 and 405 years for β-emission and β-emission respectively. The time after which three fourth of a sample will decay if it is decaying both by β-emission and β-emission simultaneously will be ______ years.
(Take ln 2 = 0.693)
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 ______.
Assertion (A): The force of repulsion between atomic nucleus and α-particle varies with distance according to inverse square law.
Reason (R): Rutherford did α-particles scattering experiment.
