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प्रश्न
In a cathode ray tube state the purpose of the fluorescent screen.
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उत्तर
Fluorescent screen helps to obtain images on the screen by converting electrical signals to light (or) visual signals by ionizing radiations to light waves.
संबंधित प्रश्न
A radiation X is focused by a particular device on the bulb of a thermometer and mercury in the thermometer shows a rapid increase. Name the radiation X
What are free electrons?
What happens if the negative potential is changed on a grid?
What happens to the mass number of an element when (i) an α -particle, (ii) a β -particle, and (iii) γ -radiation is emitted?
State three common properties of beta rays and cathode rays.
Explain, why radium paint, consisting of zinc sulphide and a trace of radium salt, glows in the dark?
State one use of radio-isotopes.
Heavy radioactive elements eventually turn into ______.
The count rate of activity of a radioactive sample of a very large population decreased from 1024 to 128 in 3 minutes. Then the rate of disintegration at the end of 5 minutes is ______.
