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JEE Main Physics Class 12 Atoms and Nuclei Questions Part 1 Questions

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Question : 1

Total: 100

The activity of a radioactive sample falls from 700 s‌−1 to 500 s‌−1 in 30 minutes. Its half life is close to:

[7 Jan. 2020, II]

72 min
62 min
66 min
52 min

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