JEE Mains 29-Jan-2023 Shift 1 Solved Paper

Section: Physics

Question : 19 of 90

Marks: +1, -0

If a radioactive element having half-life of 30‌min is undergoing beta decay, the fraction of radioactive element remains undecayed after 90‌min. will be :

[29-Jan-2023 Shift 1]

‌
1
8
‌
1
16
‌
1
4
‌
1
2

Validate

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