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प्रश्न
Unit of radioactivity is _______
विकल्प
roentgen
curie
becquerel
all the above
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उत्तर
All the above
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संबंधित प्रश्न
Arrange α, β, and γ rays in ascending order with respect to their
1) Penetrating power.
2) Ionising power
3) Biological effect
State the energy conversion taking place in a cathode ray tube
Name a gas caused by the Greenhouse effect
What is nucleus of an atom? Compare its size with that of the atom. Name its constitutents. How is the number of these constituents determined by the atomic number its atomic model.
What are cathode rays? Why are they called ‘cathode rays’? Name a material which exhibits fluorescence when cathode rays fall on it.
Name the Different Radiations Which Are Emitted by the Radioactive Substances.
Are all the radiations mentioned by you, emitted in a single radioactive decay?
An electrons emitter must have how much work function and melting point.
From α, β and γ-rays, name the one which travels with the speed of light?
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 ______.
