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प्रश्न
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उत्तर
The substance's rate of decay and the type of radiation it emits are unaffected by any physical or chemical changes, including variations in temperature and pressure, extreme heating, freezing, the effect of strong electric and magnetic fields, chemical treatment, oxidation, etc.
This demonstrates unequivocally that the orbital electrons, which are susceptible to such alterations, cannot be the cause of the radioactive event. Thus, the nucleus should be the source of radioactivity. The phenomenon of radioactivity is thus nuclear.
संबंधित प्रश्न
Answer the following questions based on a hot cathode ray tube.
What will happen to the beam when it passes through the electric field?
State three factors on which the rate of emission of electrons from a metal surface depends
How can they be made to leave the metal surface? (State any two ways)
Arrange α, β, and γ rays in ascending order with respect to their
1) Penetrating power.
2) Ionising power
3) Biological effect
State two similarities and two dissimilarities between the γ-rays and X-rays.
What kind of change takes place in a nucleus when a β -particle is emitted?
Draw a diagram of a simple atom showing the nucleus and electrons. In this atom:
(a) What type of charge will there be on the nucleus?
(b) What is the value of this charge?
A radioactive substance is oxidized. What changes would you expect to take place in the nature of radioactivity? Explain your answer.
During the emission of a beta particle, the ______ number remains same.
A radioactive element is placed in an evacuated chamber. Then the rate of radioactive decay will ______.
