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प्रश्न
Answer the following questions based on a hot cathode ray tube.
State the approximate voltage used to heat the filament
उत्तर
The filament is heated by a filament connected to a low-tension battery of about 6 V.
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संबंधित प्रश्न
What are free electrons?
Name the unit in which the work function of a metal is expressed.
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(i) Write the symbolic equation for the process.
(ii) What are numbers 24 and 11 called?
(iii) What is the general name of `""_12^24Mg `with respect to `""_11^24Na` ?
What do you mean by Atomic mass
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(a) What type of charge will there be on the nucleus?
(b) What is the value of this charge?
State two characteristics of the substance used as thermionic emitter.
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\[\ce{^A_Z X -> ^A_{Z - 2}X + ^4_{2}He}\]
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[ln (0.15) = -1.9]
