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प्रश्न
In a cathode ray tube state the purpose of covering cathode by thorium and carbon.
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उत्तर
Purpose of covering cathode by thorium and carbon is to reduce its work function, decrease its melting point.
संबंधित प्रश्न
An element `""_ZS^A` decays to `""_85R^222` after emitting 2 α particles and 1 β particle.
Find the atomic number and atomic mass of the element S.
Why is a cathode ray tube evacuated to a low pressure?
What is meant by radioactivity?
Give a scientific explanation.
When the radiation coming out from a certain radioactive substance is passed through an electric field, marks are found at three places on the photographic plate placed in its path.
During the emission of a beta particle, the ______ number remains same.
What is meant by Radioactivity?
Explain, why radium paint, consisting of zinc sulphide and a trace of radium salt, glows in the dark?
Mention four properties of Becquerel rays.
A radioactive element is placed in an evacuated chamber. Then the rate of radioactive decay will ______.
