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प्रश्न
If the radiation exposure is 100 R, it may cause ______.
रिकाम्या जागा भरा
उत्तर
If the radiation exposure is 100 R, it may cause fatal disease.
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Types of Radioactivity
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संबंधित प्रश्न
Artificial radioactivity was discovered by ______.
Gamma radiations are dangerous because
The radio isotope of ________ helps to increase the productivity of crops.
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.
If A is a radioactive element which emits an α - particle and produces 104Rf 259. Write the atomic number and mass number of the element A
Give the SI unit of radioactivity.
Which material protects us from radiation?
Cell phone towers should be placed far away from the residential area – why?
