| 1 |
The radioactive decay obeys the law |
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| 2 |
If the following particle have the same energy, which particle has the shortest wave length. |
- A. alpha particle
- B. Neutron
- C. Beta particle
- D. Proton
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| 3 |
The reciprocal of decay construct lamda of a radioactive element is. |
- A. Half life
- B. Mean life
- C. Curie
- D. total life
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| 4 |
The energy of photon for photoelectric effect is less than |
- A. 1 MeV
- B. 2 MeV
- C. 5 MeV
- D. 8 MeV
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| 5 |
Before and after nuclear reaction the number of protons and neutrons: |
- A. Must be different
- B. Must be decreased
- C. Must be increased
- D. Remains same
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| 6 |
Which one belongs to lepton's group |
- A. Electron
- B. <div>Muons</div>
- C. Neutrons
- D. All of these
|
| 7 |
Two down and one up quarks make |
- A. Proton
- B. Neutron
- C. <strike>photon</strike>
- D. Positron
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| 8 |
The mass spectrum of naturally occurring neon shows the most abundant isotope has atomic mass. |
|
| 9 |
Low level radiations effects |
- A. Less of hair
- B. Ulceration
- C. Drop of white blood cells
- D. All
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| 10 |
The number of Neutron is<sup> 238</sup>U<sub>92</sub>is |
- A. 92
- B. 238
- C. 146
- D. 330
|