Classify the following statements into true or false.
i. Radioactivity is unaffected by pressure and temperature.
ii. Radioactivity is affected by large electric and magnetic fields.
iii. The rate of disintegration of a radioactive substance at a particular time is directly proportional to the number of atoms present initially.
iv. Nuclear force is charge independent but it depends on the relative orientation of the spins.

Answer

i. True ii. False iii. False iv. True