Advertisements
Advertisements
Question
How is a zinc sulphide screen affected when a cathode ray beam strikes it?
Advertisements
Solution
When a cathode ray beam strikes a zinc sulphide screen, a bright spot is seen on the screen.
RELATED QUESTIONS
What happens if the negative potential is changed on a grid?
Name the unit in which the work function of a metal is expressed.
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.
What do you mean by Mass number.
State the penetrating range of α, β and γ radiations.
In following fig. shows a mixed source S of alpha and beta particles in a thick lead container. The particles pass through a magnetic field in a direction perpendicular to the plane of paper (inwards as shown by x). State and show in the diagram how the particles get affected.
Define the term radioactivity.
A radioactive substance is oxidized. What changes would you expect to take place in the nature of radioactivity? Explain your answer.
88Ra226 experiences three α - decay. Find the number of neutrons in the daughter element.
