Question

A radioactive substance decays to 1/16^th of its initial mass in 40 days. The half-life of the substance, in days, is: 

Options

• 20

• 10

• 5

• 2.5

Answer 1

A radioactive substance decays to 1/16^th of its initial mass in 40 days. The half-life of the substance, in days, is 5.