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When number of nuclei of P and Q are equal, the number of nuclei of R present in the sample would be

1. 3N₀
2. 9N₀ / 2
3. 5N₀ / 2
4. 2N₀

Correct answer: 5N₀ / 2

Solution

The problem involves determining the number of nuclei of R when the nuclei of P and Q are equal. This typically requires analyzing the decay chain and applying the law of radioactive decay. Based on the given options and standard decay relationships, the correct answer is 5N₀ / 2.

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