JAMB - Physics (2004 - No. 2)
A radioisotope has a decay constant of 10\(^{-7}\)s\(^{-1}\). The average life of the radioisotope is
1.00 x 107s
6.93 x 106s
1.00 x 10-7s
6.93 x 107s
Giải thích
Average life / Half life (T\(_{\frac{1}{2}}\)) = ln2/λ = 0.693/10\(^{-7}\)
= 0.693 x 10\(^7\)
= 6.93 x 10\(^6\)
= 0.693 x 10\(^7\)
= 6.93 x 10\(^6\)