If N 0 is the original mass of the substance of half-life period t 1-5 years- then the amount of substance left after 15 years isA- N0-08-N0B- N0-16-N0-02D- N0-4

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Byju's Answer

Standard XII

Physics

Mass Energy Equivalence

If N 0 is the...

Question

If $N_{0}$ is the original mass of the substance of half-life period $t_{\frac{1}{2}}$ = 5 years, then the amount of substance left after 15 years is

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Solution

The correct option is A

15 years is three half lives

Thus, N = $\frac{N_{0}}{2^{3}}$ = $\frac{N_{0}}{8}$

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If N0 is the original mass of the substance of half-life period t12 = 5 years, then the amount of substance left after 15 years is

The correct option is A 15 years is three half lives Thus, N = N023 = N08

If $N_{0}$ is the original mass of the substance of half-life period $t_{\frac{1}{2}}$ = 5 years, then the amount of substance left after 15 years is

The correct option is A

15 years is three half lives

Thus, N = $\frac{N_{0}}{2^{3}}$ = $\frac{N_{0}}{8}$