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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.
संबंधित प्रश्न
Write one use of cathode ray tube.
When is said to be the nucleus unstable?
Give a scientific explanation.
When the radiation coming out from a certain radioactive substance is passed through an electric field, marks are found at three places on the photographic plate placed in its path.
Define free electrons.
How is a cathode ray beam affected while passing through a magnetic field?
How is a cathode ray beam affected while passing through an electric field?
What is the value of the speed of gamma radiations in air or vacuum?
If 10% of a radioactive substance decays in every 5 years, then the percentage of the substance that will have decayed in 20 years will be ______.
Assertion (A): The force of repulsion between atomic nucleus and α-particle varies with distance according to inverse square law.
Reason (R): Rutherford did α-particles scattering experiment.
