WorksheetsNuclear Physics
Total questions: 15
Worksheet time: 8mins
In order for the chain reaction of uranium fission to take place in a nuclear reactor, should A/B arising from these C/D/E reactions.
A. accelerate
B. slow down
C. electrons
D. protons
E. neutrons
Which are real life uses of nuclear phenomena?
nuclear power plant
radiation therapy
smoke detectors
stars shining
erupting volcano
T21=
1.44 τ
0.693 τ
λ1
loge 2 ×λ
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
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 energy emitted by the Sun is produced as a result
coal burning
the reaction cycle in which we get the helium nuclei from hydrogen nuclei
uranium nucleus fission reaction
pass electrons from higher shells to lower ones
Isotopes of the same elements have different
Number of neutrons in nucleus
Number of protons in nucleus
Nuclear energy is energy released from a ______ during nuclear reactions
fast-moving proton
fast-moving neutron
fast-moving electron
nucleus
___________ is a process where an unstable nucleus becomes a more stable nucleus by emitting radioactive radiation
radioactive decay
half-life
nuclear fission
nuclear fusion
The radioactive parent elements are
uranium, actinium, thorium
actinium, thorium, plutonium
uranium, thorium, neptune, plutonium
uranium, actinium, thorium, neptune
The atomic number of a given nuclide is equal to
Number of protons in nucleus
Number of neutrons in nucleus
Sum of number of protons and neutrons in nucleus
In a γ decay process the mass number and atomic number of the nucleus remain unchanged.
True
False
A beam of alpha radiation was directed between two electrified plates, the beam
will lean towards the positive plate
will lean towards the negative plate
it will not change its direction of movement
it will start circling the circle
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.
What is radioactivity?
The phenomena of spontaneous disintegration of an atomic nucleus resulting in a release of only matter.
The phenomena of spontaneous disintegration of an atomic nucleus resulting in a release of only energy.
The phenomena of spontaneous disintegration of an atomic nucleus resulting in a release of energy and matter.
