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

The energy is found from Einstein's mass energy relation is called

Question # 2

The distance travelled byα-particle in a medium before coming to rest, is called

Question # 3

Mass of proton is of order of

Question # 4

Mass of proton is

Question # 5

Proton was discovered by Rutherford in

Question # 6

Neutron was disvovered by:

Question # 7

Radioactivity was discovered by:

Question # 8

An alpha particle has a charge of

Question # 9

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

Question # 10

When certain nucleus emits anα particle, its mass number:

Question # 11

Radioactivity was discovered by

Question # 12

Neutron was suggested to be in the nucleus by:

Question # 13

Which of the following material has smaller has life

Question # 14

The unit of decay constant is:

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
2 The energy is found from Einstein's mass energy relation is called
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
3 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
4 The penetration power ofβ-particle is
A. zero
B. less thanα-particle
C. equal toα-particle
D. greater thanα-particle
5 When a nucleus emits an alpha particles, its charge number decreases by
A. 3
B. 2
C. 6
D. 5
6 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
7 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
8 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A
9 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
10 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these

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