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RELATED QUESTIONS
Under which conditions does the nucleus of an atom tend to radioactive?
What happens to the mass number of an element when (i) an α -particle, (ii) a β -particle, and (iii) γ -radiation is emitted?
Radioactive substances were found to give off three types of rays. Name them. How do they
(a) React to the magnetic field?
(b) React to the electric field?
(c) Act when different thickness of lead sheets is placed in their path?
What are the uses of radioactive isotopes in following?
(a) Medical field,
(b) Agriculture,
(c) Industries?
Why are materials of low work function preferred as thermionic cathode materials?
What are ‘Becquerel rays’?
Explain, why radium paint, consisting of zinc sulphide and a trace of radium salt, glows in the dark?
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:
How does the ionising power of beta particles compare with that of alpha particles?
What is the mass and charge of gamma rays?
