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What do you mean by electron emission?
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What are the types of emission?
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State two characteristics of the substance used as thermionic emitter.
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State two properties that a substance should possess when used as a thermionic emitter.
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How is a cathode ray beam affected while passing through a magnetic field?
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How is a cathode ray beam affected while passing through an electric field?
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What are cathode rays? Why are they called ‘cathode rays’? Name a material which exhibits fluorescence when cathode rays fall on it.
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How is a zinc sulphide screen affected when a cathode ray beam strikes it?
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State any two uses of cathode rays.
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Why are materials of low work function preferred as thermionic cathode materials?
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In a cathode ray tube state the purpose of covering cathode by thorium and carbon.
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In a cathode ray tube state the purpose of the fluorescent screen.
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In a cathode ray tube state. How is it possible to increase the rate of emission of electrons.
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Name the three main parts of a Cathode Ray Tube.
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How is a cathode ray tube used to convert an electrical signal into a visual signal?
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Name a common device where a hot cathode ray tube is used.
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What do you understand by the term radioactivity?
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