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RELATED QUESTIONS
Answer the following questions based on a hot cathode ray tube
Name the charged particles
What happens if the negative potential is changed on a grid?
In a cathode ray tube state:
(i) the purpose of covering cathode by thorium and carbon.
(ii) the purpose of the fluorescent screen.
(iii) how is it possible to increase the rate of emission of electrons.
Define the term radioactivity.
What are ‘Becquerel rays’?
Mention one important function of ear main parts:
State the principle on which the functioning of a nuclear reactor is based.
Calculate the time interval between 33% decay and 67% decay if half-life of a substance is 20 minutes.
A deuteron strikes 8O16 nucleus with subsequent emission of an alpha particle. Identify the nucleus so produced:
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.
