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MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics
Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics
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Total Questions15
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Time Allowed20
Physics ECAT Pre Engineering Chapter 21 Nuclear Physics
00:00
Question # 1
The range of particle depends upon the factor
Question # 2
Alfa , beta and gamma rays are emitted from a radio-active substance
Question # 3
Neutrons are
Question # 4
The chemical properties of an element depends upon the number of
Question # 5
The reciprocal of decay constant λ of a radioactive material is:
Question # 6
If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be
Question # 7
The isotope/s of hydrogen is /are:
Question # 8
β-particles are easily deflected by collisions than heavy
Question # 9
Gamma rays consist of steam of
Question # 10
Structure of the nucleus was explained by
Question # 11
Maric Curie and Pieree Curie discovered two new radioactive elements, which are called
Question # 12
The rate of decay of radioactive substance
Question # 13
The half life of radioactive substances depends upon
Question # 14
Charge on neutron 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 | Neutron was discovered by |
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
|
| 2 | Electrons are |
A. positive charged
B. negatively charged
C. massless
D. neutral
|
| 3 | The rate of decay of radioactive substance |
A. is constant
B. decrease exponentially with time
C. varies inversely as time
D. decreases linearly with time
|
| 4 | Proton was discovered by Rutherford in |
A. 1915
B. 1906
C. 1910
D. 1920
|
| 5 | 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
|
| 6 | For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is |
A. A - Z
B. A
C. Z
D. A + Z
|
| 7 | The figure 1.007276μ shows the mass of an: |
A. Atom
B. Positron
C. Electron
D. Neutron
|
| 8 | Mass of neutron is |
A. 1.67 x 10-31kg
B. 1.67 x 10-27kg
C. 9.1 x 10-31kg
D. 1.67 x 10-19kg
|
| 9 | 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
|
| 10 | The half life of uranium-238 is |
A. 6.2 x 109years
B. 4.5 x 109days
C. 4.5 x 109years
D. 1.3 x 106years
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs