Let N_\beta be the number of \beta particles emitted by 1 gram of Na^{24} radioactive nuclei (half life = 15 hrs) in 7.5 hours, N_\beta is close to (Avogadro number =6.023\times10^23\text{/}g mole): [Main 11 Apr 2015]

JEE Main 11 April 2015 Paper

Section: Physics

Question : 28 of 90

Marks: +1, -0

Let Nβ be the number of β particles emitted by 1 gram of Na24 radioactive nuclei (half life = 15 hrs) in 7.5 hours, Nβ is close to (Avogadro number =6.023×1023/g mole):

[Main 11 Apr 2015]

6.2×1021
7.5×1021
1.25×1022
1.75×1022

Validate

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