ECAT Physics Chapter 21 Nuclear Physics

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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ECAT Physics Chapter 21 Nuclear Physics

00:00
Question # 1

The counter, which also provides the power to the G.M. tube is called:

Question # 2

Which of these is not a radiation detector

Question # 3

The number of isotopes of hydrogen are

Question # 4

An alpha particle has a charge of

Question # 5

After alpha decay the atomic number of the atom

Question # 6

Binding energy per nucleus is

Question # 7

The penetration power ofβ-particle is

Question # 8

The number of all the protons and neutrons in a nucleus is known as

Question # 9

Radioactivity was discovered by:

Question # 10

Charge on neutron is

Question # 11

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 12

Neutrons are

Question # 13

Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called

Question # 14

1 amu is equal to.

Question # 15

A pair of quark and antiquark makes a:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The rate of decay of a radioactive substance
A. decrease exponentially with time
B. decreases linearly with time
C. increases linearly with time
D. increases exponentially with time
2 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window
3 Radiation detector are used to
A. measure intensity of radiation
B. measure energy of radiation
C. difference between different types of radiation
D. all the above
4 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
5 The time required for a radioactive material to decrease in active by one half is called
A. half time
B. half life
C. disintegration time
D. mean life
6 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
7 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
8 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
9 A mass difference of 0.0012 u is equivalent to and energy of:
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
10 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes

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