ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

Try The MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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ECAT Physics Chapter 21 Nuclear Physics

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Question # 1

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

Question # 2

The half life of radioactive substances depends upon

Question # 3

Mass of proton is of order of

Question # 4

There is present in paraffin a large amount of:

Question # 5

The range ofβ-particle in air is greater than that ofα-particle by

Question # 6

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 7

The reciprocal of decay constant λ of a radioactive material is:

Question # 8

The half life of uranium-238 is

Question # 9

Mass of proton is

Question # 10

Radioactivity is

Question # 11

Charge on neutron is

Question # 12

Radioactivity

Question # 13

Pair production take place when energy ofγ-rays photon is

Question # 14

The most abundant isotope of neon is

Question # 15

A curie represents a very strong source of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
2 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
3 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
4 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
5 Alfa particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
6 Referring to the above figure, we can say that of all the elements, the most stable element is
A. Phosphours
B. Iron
C. uranium
D. Lithium
7 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
8 Pair production take place when energy ofγ-rays photon is
A. equal to 1.02 Mev-
B. greater than 1.02 Mev
C. less than 1.02 Mev
D. none of these
9 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
10 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

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