One gram of a radiactive substance takes `50` to lose `1` centigram. Find its half-life period.

1 gm of radiactive substance takes 30sec to lose 1 centigram. Find its half life period.

(a) The half life period of radium is 1590 yrs. After how many years will one gram of the pure element, (i)be reduced to one centigram, (ii) lose one centigram. (b) The half life of radon is 3.8 days. After how many days will only one twentieth of radon sample be left over? (c) 1 gm of radioactive substance takes 50 sec. to lose 1 centigram. Find its half life period?

Sixteen gram of a radioactive substance are reduced to 1 g in one hour. The half life period of the radioactive substance is :

The half-life of a radiactive substance depends upon:

Eight grams of a radioactive substance is reduced to 0.5 g after 1 hour. The half life period of the radioactive substance is :

If 3//4 quantity of a radioactive substance disintegrates in 2 hours, its half - life period will be

If 3//4 quantity of a radioactive substance disintegrates in 2 hours, its half - life period will be

If in 3160 years, a radioactive substance becomes one-fourth of the original amount, find it’s the half-life period.

If in 3160 years, a radioactive substance becomes one-fourth of the original amount, find it’s the half-life period.