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NEET 2022 Model Paper 4

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Question : 4

Total: 200

The half life of ‌92238U undergoing α-decay is 1.42×1017s. What is activity (initial) of 1‌gm of the sample.

1.2×102s−1
1.96×103s−1
1.23×104s−1
4.5×1012s−1

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