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Question
Man-made radioactivity is also known as _______.
Options
Induced radioactivity
Spontaneous radioactivity
Artificial radioactivity
a & c
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Solution
Man-made radioactivity is also known as a & c.
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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: _______.
A cobalt specimen emits induced radiation of 75.6 millicurie per second. Convert this disintegration in to becquerel (one curie = 3.7 × 1010 Bq)
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?
