Radioactivity & Nuclear Energy
Authored by shahruzaman hamdani
Physics
11th Grade
Used 13+ times
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19 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Time taken for a sample of radioactive nuclei to decay to half of its initial number is known as
Half Time
Half Life
Radioactivity
Uranium -235
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
If the ratio of Pb : U is 3:1 , it is means that
there is 25 % of Pb and 75 % of U
there is 25 % of decayed nuclei and 75 % of undecayed nuclei
undergoes 2 half life
undergoes 3 half life
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A sample of radioactive material stored in the laboratory has an initial activity of 480 s(-1). its half life is 6 minutes, how much is it activity after 30 minutes?
5 s^(-1)
15 s^(-1)
150 s^-1
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
....................................... is aprocess of unstable nucleus becomes more stable by emitting radioactive radiation.
half life
Beta particle
Radioactive decay
Nuclear Energy
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
................... atomic energy released during nuclear reaction such as radioactive decay, nuclear fission and nuclear fusion
Fission Energy
Fusion Energy
Nuclear Energy
Radioactive Energy
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Nuclear Fission is ..............
atomic energy, released during nuclear reactions such as radioactive decay, nuclear fission and nuclear fusion.
a nuclear reaction when a heavy nucleus splits into two or more lighter nuclei while releasing a large amount of energy
a nuclear reaction in which small and light nuclei fuse to form a heavier nucleus while releasing a large amount of energy.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Boron or cadmium place in nuclear reactor , function as
Moderator
cooling agent
control rod
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