Advertisements
Advertisements
Question
In a cathode ray tube state. How is it possible to increase the rate of emission of electrons.
Advertisements
Solution
(i) Decrease work function.
(ii) Coating the cathode with a layer of alkaline earth metallic oxides (or) hydrides.
APPEARS IN
RELATED QUESTIONS
State the penetrating range of α, β and γ radiations.
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 is nucleus of an atom? Compare its size with that of the atom. Name its constitutents. How is the number of these constituents determined by the atomic number its atomic model.
Name two radioactive substances.
A certain nucleus A (mass number 238 and atomic number 92) is radioactive and becomes a nucleus B (mass number 234 and atomic number 90) by the loss of one particle.
What particle was emitted?
Define bound electrons.
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.
