WorksheetsNucelar Physics
Total questions: 11
Worksheet time: 42mins
Neutron number, N is ...
the number of protons in a nucleus.
the number of neutrons in a nucleus.
the number of nucleons in a nucleus.
Mass number, A is ....
the number of protons in a nucleus.
the number of neutrons in a nucleus.
the number of nucleons in a nucleus.
Atomic number, Z is ...
the number of protons in a nucleus.
the number of neutrons in a nucleus.
the number of nucleons in a nucleus.
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
What is the number of neutrons in Cesium?
55 neutrons
76 neutrons
84 neutrons
106 neutrons
139 neutrons
Uranium-235 has 92 protons and a binding energy of 1786 MeV. Calculate its binding energy per nucleon.
19.4 MeV
7.6 MeV
12.5 MeV
0.13 MeV
A sample of cobalt-60 has a mass of 8.84×10−10 g and activity of 3.7×104 Bq. What is the half-life of cobalt-60? (NA=6.02×1023; u=1.66×10−27 kg.)
5.27 days
5.27 years
52.7 years
527 years
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