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प्रश्न
Artificial radioactivity was discovered by ______.
विकल्प
Bequerel
Irene Curie
Roentgen
Neils Bohr
MCQ
रिक्त स्थान भरें
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उत्तर
Artificial radioactivity was discovered by Irene Curie.
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Types of Radioactivity
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संबंधित प्रश्न
Man-made radioactivity is also known as _______.
Positron is an ________.
_______ is used to measure exposure rate of radiation in humans.
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.
Which material protects us from radiation?
