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

00:00
Question # 1

Which of the following material has smaller has life

Question # 2

Neutron was disvovered by:

Question # 3

Structure of the nucleus was explained by

Question # 4

Radioactivity

Question # 5

Proton was discovered by Rutherford in

Question # 6

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

Question # 7

Nucleus consists of

Question # 8

Pair production take place when energy ofγ-rays photon is

Question # 9

Electrons are

Question # 10

The penetration power ofβ-particle is

Question # 11

An alpha particle has a charge of

Question # 12

Binding energy per nucleus is

Question # 13

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

Question # 14

The unit of decay constant is

Question # 15

Fraction of the decaying atoms per unit time is called

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called
A. nuclear fission
B. nuclear fusion
C. man defect
D. radioactivity
2 1 amu is equal to
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-34kg
D. 1.66 x 10-27kg
3 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
4 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
5 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
6 The energy acquired by a mass of 1g moving with the speed of light is
A. 3 x 108J
B. 9 x 1013J
C. 3 x 1013J
D. 9 x 1016J
7 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
8 When a nucleus emits an alpha particles, its charge number decreases by
A. 3
B. 2
C. 6
D. 5
9 Neutron was suggested to be in the nucleus by:
A. Rutherford in 1920
B. Bohar in 1913
C. Dirac in 1928
D. Anderson in 1932
10 Radioactivity
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements

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