If ` 2g` of an isotope has a half`-` life of 7 days, the half life of `1g` sample is

If 5 g of an isotope sample has a half life of 30 days, the half life of 2 g of sample is :

If 8.0 g of radioactive isotope has a half life of 10 hours, the half life of 2.0 g of the same substance is

If 8.0 g of radioactive isotope has a half life of 10 hours, the half life of 2.0 g of the same substance is

If 2.0 g of a radioactive substance has t_(1//2) of 7 days , the half life of 1 g sample is

If 2.0 g of a radioactive isotope has a half life of 20 hr, the half life of 0.5 g of the same substance is

If 8.0 g of radioactive isotope has a half-life of 10 h, the half-life of 2.0 g of the same substance is

Two isotopes P and Q atomic weight 10 and 20 , respectively are mixed in equal amount by weight. After 20 days their weight ratio is found to be 1:4 . Isotope P has a half-life of 10 days. The half-life of isotope Q is

Two isotopes P and Q atomic weight 10 and 20 , respectively are mixed in equal amount by weight. After 20 days their weight ratio is found to be 1:4 . Isotope P has a half-life of 10 days. The half-life of isotope Q is