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Question

Physics Question on Half life

If N0N_0 is the original mass of the substance of half-life period t12=5 t_{\frac12} = 5 years, then the amount of substance left after 15 years is

A

N08\frac{N_0}{8}

B

N018\frac{N_0}{18}

C

N02\frac{N_0}{2}

D

N04\frac{N_0}{4}

Answer

N08\frac{N_0}{8}

Explanation

Solution

The correct option is(A):N08\frac{N_0}{8}