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प्रश्न
Mention one important function of ear main parts:
State the principle on which the functioning of a nuclear reactor is based.
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उत्तर
(i) Electron gun gives out fine beam of electrons.
(ii) The deflecting system deflect electron beam in horizontal and vertical direction.
(iii) The fluorescent screen gives bright spot on stirking of electron.
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संबंधित प्रश्न
In a cathode ray tube, what is the function of anode?
What do you mean by Mass number.
An element P disintegrates by α - -emission and the new element suffers two further disintegrations, both by β -emission, to form an element Q. Explain the fact that P and Q are the isotopes.
State three safety precautions that you would take while handling the radioactive substances.
What are the types of emission?
In a cathode ray tube state the purpose of covering cathode by thorium and carbon.
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)
Complete the following radioactive reaction:
\[\ce{^-_-X -> ^-_-Y + ^4_2He -> ^234_91Z + ^0_-1e}\]
In the following atoms, which one is a radioisotope? Give one use of this isotope.
O16, C14, N14, He4
