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प्रश्न
A radioactive substance is oxidized. What changes would you expect to take place in the nature of radioactivity? Explain your answer.
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उत्तर
There will be no change in the nature of radioactivity. This is because radioactivity is a nuclear phenomenon.
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संबंधित प्रश्न
Answer the following questions based on a hot cathode ray tube
Name the charged particles
What are free electrons?
Write one use of cathode ray tube.
What is thermionic emission?
State the penetrating range of α, β and γ radiations.
What are cathode rays? Why are they called ‘cathode rays’? Name a material which exhibits fluorescence when cathode rays fall on it.
When an α-particle of mass m moving with velocity ν bombards on a heavy nucleus of charge Ze, its distance of closest approach from the nucleus depends on m as:
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.
