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प्रश्न
Unit of radioactivity is _______
पर्याय
roentgen
curie
becquerel
all the above
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उत्तर
All the above
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संबंधित प्रश्न
Name the radiations which are absorbed by greenhouse gases in the earth’s atmosphere.
In a cathode ray tube, what is the function of anode?
State the penetrating range of α, β and γ radiations.
Give the relative ionizing power of α, β and γ radiations.
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.
A radioactive source emits three types of radiations.
Name the radiation which has the highest ionizing power.
How is a cathode ray beam affected while passing through a magnetic field?
Mention four properties of Becquerel rays.
The mean lives of a radioactive substance are 1620 and 405 years for β-emission and β-emission respectively. The time after which three fourth of a sample will decay if it is decaying both by β-emission and β-emission simultaneously will be ______ years.
(Take ln 2 = 0.693)
