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Physics UTME / JAMB 1983 Modern Physics and Nuclear Physics
The linear expansivity of brass is 2 x 10-5 oC-1. If the volume of a piece of brass is 10cm3 at 0oC, what will be its volume at 100oC?
A
10.02cm3
B
10.04cm3
C
10.06cm3
D
10.20cm3
E
102.00cm3
medium Difficulty
Physics UTME / JAMB 1983 Modern Physics and Nuclear Physics
Which of the following statements is CORRECT? i. the mass number is equal to the total number of protons and electrons in an atom. ii. the atomic number is equal to the number of protons in an atom. iii. the number of electrons in an atom is equal to the total number of protons and neutrons in the nucleus.
A
i only
B
ii only
C
iii only
D
i and ii only
E
ii and iii only
medium Difficulty
Physics UTME / JAMB 1982 Modern Physics and Nuclear Physics
Which of the following statements is NOT true of \(\gamma\)-rays?
A
\(\gamma\)-rays belong to the electromagnetic spectrum
B
\(\gamma\)-rays do not carry an electron charge
C
\(\gamma\)-rays obey the inverse cube law in air
D
the thickness of aluminium which stops b-particule has a negligible effect on \(\gamma\)-radiation
E
the difference between \(\gamma\)-rays and X-rays is that \(\gamma\)-rays originate from energy charges in the nuclei of atoms, while X-rays comes from energy charges associated with the electron structure of atoms
medium Difficulty
Physics UTME / JAMB 1982 Modern Physics and Nuclear Physics
A 10g mass placed on the pan of a spring balance causes an extension of 5cm. If a 15g mass is placed on the pan of the same spring balance, the extension is
A
3.3cm
B
6.5cm
C
7.5cm
D
10.8cm
E
15.0cm
medium Difficulty
Physics UTME / JAMB 1982 Modern Physics and Nuclear Physics
In a radioactive series \( ^{235} _{92}L \to ^{235} _{92}M \to ^{231} _{90}N \to ^{231} _{91}\phi \) The particles emitted are respectively
A
\( \beta , \beta , \alpha \)
B
\( \alpha , \gamma , \beta \)
C
\( \gamma , \alpha , \beta \)
D
\( \alpha , \alpha , \beta \)
E
\( \beta , \alpha , \beta \)
medium Difficulty
Physics UTME / JAMB 1980 Modern Physics and Nuclear Physics
Which of the following elements is the best absorber of X-rays?
A
hydrogen
B
oxygen
C
calcium
D
copper
E
lead
medium Difficulty
Physics UTME / JAMB 1979 Modern Physics and Nuclear Physics
Which of the following is the correct definition of 'half-life'?
A
the average life-time of a radioactive material
B
the time it takes a radioactive material to decay to half of its original quantity
C
half the period a radioactive material decays completely
D
half of the decay constant
E
the decay constant times life-time
medium Difficulty
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