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प्रश्न
Positron is an ________.
रिकाम्या जागा भरा
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उत्तर
Positron is an antiparticle of electron.
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Types of Radioactivity
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संबंधित प्रश्न
Gamma radiations are dangerous because
________ aprons are used to protect us from gamma radiations.
Abbreviation of ICRP______.
If the radiation exposure is 100 R, it may cause ______.
Match: III
| a. | Soddy Fajan | Natural radioactivity |
| b. | Irene Curie | Displacement law |
| c. | Henry Bequerel | Mass energy equivalence |
| d. | Albert Einstein | Artificial Radioactivity |
Use the analogy to fill in the blank
Spontaneous process: Natural Radioactivity, Induced process: _______.
Mark the correct choice as
- Assertion: In a β - decay, the neutron number decreases by one.
- Reason: In β - decay atomic number increases by one.
Who discovered natural radioactivity?
Give the SI unit of radioactivity.
Mr. Ramu is working as an X-ray technician in a hospital. But, he does not wear the lead aprons. What suggestion will you give to Mr. Ramu?
