Advertisements
Advertisements
Question
In a cathode ray tube state the purpose of the fluorescent screen.
Advertisements
Solution
Fluorescent screen helps to obtain images on the screen by converting electrical signals to light (or) visual signals by ionizing radiations to light waves.
RELATED QUESTIONS
A radioactive substance is oxidized. Will there be any change in the nature its radioactivity? Give a reason for your answer
A radioactive nuclide `""_86^226` Ra decays by emission of two alpha particles, one beta particle and gamma rays. Which of the following is the resulting nuclide X?
What are the uses of radioactive isotopes in following?
(a) Medical field,
(b) Agriculture,
(c) Industries?
How is a zinc sulphide screen affected when a cathode ray beam strikes it?
In a cathode ray tube state. How is it possible to increase the rate of emission of electrons.
Which part of the atom undergoes a change in the process of radioactive decay?
It is advised not to touch a radioactive substance by hand. Give reason.
A radioactive nucleus \[\ce{^A_ZX}\] undergoes spontaneous decay in the sequence \[\ce{^A_ZX -> _{Z-1 }B -> _{Z-3}C -> _{Z-2}D }\], where Z is the atomic number of element X. The possible decay particles in the sequence are ______.
Two radioactive materials A and B have decay constants 25λ and 16λ respectively. If initially they have the same number of nuclei, then the ratio of the number of nuclei of B to that of A will be "e" after a time `1/("a"lambda)` The value of a ______.
A radioctive sample decays `7/8` times its original quantity in 15 minutes. The half-life of the sample is ______.
