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संबंधित प्रश्न
Answer the following questions based on a hot cathode ray tube.
State the approximate voltage used to heat the filament
What are free electrons?
What happens if the negative potential is changed on a grid?
Name the unit in which the work function of a metal is expressed.
An electromagnetic radiation is used for photography in fog. [2]
(i) Identify the radiation.
(ii) Why is this radiation mentioned by you, ideal for this purpose ?
State the penetrating range of α, β and γ radiations.
What happens to the position of an element in the periodic table when it emits an alpha particle
In a cathode ray tube state. How is it possible to increase the rate of emission of electrons.
How is a cathode ray tube used to convert an electrical signal into a visual signal?
A radioactive material decays by simultaneous emissions of two particles with half-lives of 1400 years and 700 years respectively. What will be the time after which one-third of the material remains? (Take In3 = 1.1)
