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Chapter 21 - Nuclear Physics - 2
1.
Elementary particles are the basic building blocks of _________
a) Solids
b) Matter
c) Liquids
d) Gases
2.
Subatomic particles are divided into________ groups.
a) Two
b) Three
c) Five
d) Four
3.
The
g
-rays radiographs are used in____________
a) Chemicals
b) Medical diagnostic
c) Industrial units
4.
The magnitude of “Activity” used for cancer treatment is_________________.
a) 4x10
18
Beq
b) 4x10
13
Beq
c) 4x10
23
Beq
5.
Weak nuclear force is a type of repulsive force having range _________m.
a) 10
17
m
b) 10
-19
m
c) 10
-17
m
6.
The mass of
a
-particle is about:
a) 17500 times that of electrons
b) 7500 times that of electron
c) The mass of one neutron
d) Mass of one electron
7.
The size of the nucleus measured by Rutherford is:
a) 10
10
m
b) 10
-10
m
c) 10
12
m
d) 10
14
m
8.
The mass of a nucleus is about:
a) 10
-27
kg
b) 10
-24
kg
c) 10
-31
kg
d) 10
-8
kg
9.
A particle containing a mass of an electron but a charge of proton is called:
a) Pion
b) Antiproton
c) Meson
d) Positron
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