MCQ
Current in the circuit will be


- A$\frac{5}{{40}}A$
- ✓$\frac{5}{{50}}A$
- C$\frac{5}{{10}}A$
- D$\frac{5}{{20}}A$

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Reason : The energetic $\beta - $ particles emitted in the decay of ${}^{90}Sr$ damage the bone marrow
