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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
Why is a cathode ray tube evacuated to a low pressure?
State the penetrating range of α, β and γ radiations.
During the emission of a beta particle, the ______ number remains same.
State three safety precautions that you would take while handling the radioactive substances.
State two characteristics of the substance used as thermionic emitter.
State two properties that a substance should possess when used as a thermionic emitter.
How is a cathode ray tube used to convert an electrical signal into a visual signal?
Name the Different Radiations Which Are Emitted by the Radioactive Substances.
Are all the radiations mentioned by you, emitted in a single radioactive decay?
A certain nucleus has a mass number 20 and atomic number 9. Find the number of neutrons and protons present in it.
