Entry Test MCQ :: Nuclear Physics
|
|
|
|
|
|
| 51. |
CFC is used in |
| A. |
refrigeration |
B. |
aerosol spray |
| C. |
plastic foam industry |
D. |
all of above |
Answer: Option D
Explanation:
|
| 52. |
Average distance covered by ?-particle in air before its ionizing power ceases is called its |
| A. |
trajectory |
B. |
range |
| C. |
firing level |
D. |
limit |
Answer: Option B
Explanation:
|
| 53. |
Which one of the following possesses greater penetration power ? |
| A. |
?-rays |
B. |
?-rays |
| C. |
?-rays |
D. |
neutron-rays |
Answer: Option D
Explanation:
|
| 54. |
The most useful tracer is |
Answer: Option D
Explanation:
|
| 55. |
?-rays are electromagnetic waves like |
| A. |
light waves |
B. |
heat waves |
| C. |
micro waves |
D. |
x-rays |
Answer: Option D
Explanation:
|
| 56. |
Charge on ?-particle is |
Answer: Option A
Explanation:
|
| 57. |
Why ?-rays are used to kill bacteria to sterilize surgical equipments etc? |
| A. |
chargeless |
B. |
massless |
| C. |
highly penetrating |
D. |
all of above |
Answer: Option C
Explanation:
|
| 58. |
?-particle ionizes an atom |
| A. |
due to electrostatic force of attraction |
B. |
due to electrostatic force of repulsion |
| C. |
due to direct collision |
D. |
due to gravitational force |
Answer: Option B
Explanation:
|
| 59. |
?-particles possess greater penetration power than that of ?-particles due to its |
| A. |
smaller ionization power |
B. |
greater ionization power |
| C. |
neither greater nor smaller ionization power |
D. |
same ionization power |
Answer: Option A
Explanation:
|
| 60. |
Pair production cannot take place in vacuum as |
| A. |
mass is not conserved |
B. |
energy is not conserved |
| C. |
momentum is not conserved |
D. |
charge is not conserved |
Answer: Option C
Explanation:
|
Read more:
|
|
