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Worksheetsnuclear physics
Total questions: 10
Worksheet time: 7mins
___________ is a process where an unstable nucleus becomes a more stable nucleus by emitting radioactive radiation
radioactive decay
half-life
nuclear fission
nuclear fusion
Which of the following is NOT in type of radioactive radiation?
Alpha decay ( α -decay)
Beta decay ( β -decay)
Gamma ray ( γ -ray)
X-ray
Thorium-232 decays and emits gamma ray. which of the following is true about gamma ray?
I. Gamma ray is type of electromagnetic wave
II. Gamma ray is neutral
III. Gamma ray does not have energy
I. and II.
I. and III.
II. and III.
Nuclear power stations are built near the sea because _______
of the cooler surroundings
water is used as a nuclear fuel
a lot of water is used as coolant for the reactors
more electricity can be generated
Radioactive material X has a half-life of 5 days. What is the number of days taken for the activity of X to reduce to 12.5% of its initial activity?
5 days
10 days
15 days
20 days
A sample of radioactive material has an initial activity of 240 s-1 . If its half-life is 30 minutes, how much is its activity after 2 hours?
15 s-1
30 s-1
60 s-1
120 s-1
Nuclear energy is energy released from a ______ during nuclear reactions
fast-moving proton
fast-moving neutron
fast-moving electron
nucleus
The amount of energy released from nuclear fission depends on the
I. critical mass
II. speed of light in vacuum
III. mass deficit
I. and II. only
I. and III. only
II. and III. only
All the answer is correct
The walls of a nuclear reactor are made of ______
iron
concrete
copper
carbon
________ is a nuclear reaction in which a heavy nucleus is split into two or more smaller and lighter nuclei after being bombarded by fast-moving neutron.
Radiaactive decay
Nuclear fission
Nuclear fusion
half-life
