Atomic Structure and Radioactivity - SS1 Physics Past Questions and Answers - page 4
Discuss the limitations of the Bohr Model and the development of Quantum Mechanics.
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Radioactivity is the spontaneous emission of:
Electrons
Protons
Alpha particles
Neutrons
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The process in which an unstable atomic nucleus emits an alpha particle is known as:
Alpha decay
Beta decay
Gamma decay
Nuclear fission
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The half-life of a radioactive substance is defined as the time it takes for:
Half of the substance to decay
All of the substance to decay
One-fourth of the substance to decay
None of the above
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Beta decay involves the emission of:
Protons
Electrons
Neutrons
Alpha particles
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Gamma radiation is:
A stream of protons
A stream of electrons
High-energy electromagnetic radiation
The emission of alpha particles
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The process in which a heavy nucleus splits into two smaller nuclei is called:
Alpha decay
Beta decay
Gamma decay
Nuclear fission
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The decay of a radioactive substance follows a:
Linear pattern
Exponential pattern
Logarithmic pattern
Random pattern
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Radioactive isotopes are used in:
Medical imaging
Power generation
Carbon dating
All of the above
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The unit used to measure the amount of radioactivity is:
Watt
Coulomb
Becquerel
Ampere
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