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प्रश्न
State two dissimilarities between the γ-rays and X-rays.
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उत्तर
| Sr. No. | Property | γ-rays | X-rays |
| 1. | Origin | These rays originate from inside an unstable atomic nucleus during radioactive decay transitions. | These rays are produced outside the nucleus when high-velocity cathode electrons strike a heavy metal target. |
| 2. | Penetrating Power | These waves possess an extremely high penetrating power that can pass through thick iron plates. | These waves possess a much lower penetrating power compared directly to gamma rays. |
| 3. | Wavelength | These rays have a shorter wavelength, which gives them a higher energy level. | These rays have a longer wavelength, which gives them a lower energy level. |
संबंधित प्रश्न
Under which conditions does the nucleus of an atom tend to radioactive?
In a cathode ray tube state:
(i) the purpose of covering cathode by thorium and carbon.
(ii) the purpose of the fluorescent screen.
(iii) how is it possible to increase the rate of emission of electrons.
What happens to the atomic number of element when (i) An α -particle, (ii) A β -particle 1 and (iii) γ-radiation is emitted?
A radioactive source emits three types of radiations. Name them.
(i) Name the radiations which are charged.
(ii) Name the radiations which are most penetrating.
(iii) Name the radiations which travel with the speed of light.
(iv) Name the radiations which have the largest mass.
What are cathode rays? Why are they called ‘cathode rays’? Name a material which exhibits fluorescence when cathode rays fall on it.
A certain nucleus has a mass number 20 and atomic number 9. Find the number of neutrons and protons present in it.
From α, β and γ-rays, name the one which is not affected by electric or magnetic field?
State one use of radio-isotopes.
