Home
Class 12
PHYSICS
The half-life of .^215At is 100mus. The ...

The half-life of `.^215At` is `100mus`. The time taken for the activity of a sample of `.^215At` to decay to `1/16th` of its initial value is

A

` 400 mu s`

B

`6.3 mu s`

C

`40 mu s`

D

`300 mu s`

Text Solution

Verified by Experts

The correct Answer is:
a
`A=A_(0) (1//2)^(n),n` =number of half-lives.
Promotional Banner

Similar Questions

Explore conceptually related problems

The half - life of ^(215) At is 100 mu , s. The time taken for the radioactivity of a sample of ^(215) At to decay to 1//16^(th) of its initially value is

The half-life of ""^(215)At is 100mus . Find the time taken for the radioactivity of a sample of ""^(215) At to decay to 1/(16)th of its initial value:

The half-life of Bi^210 is 5 days. What time is taken by (7//8)^th part of the sample of decay ?

The half-life of a radioactive substance is 100 years, Calculate in how many years the activity will decay to 1/10th of its initial value.

The life-life of Bi^210 is 5 days. What time is taken by (7//8)^th part of the sample of decay ?

The half life of a radioactive substance is 20s, the time taken for the sample to decay by 7//8^(th) of its initial value is

The half-life of a radioactive substance is 5000 years. In how many years, its activity will decay to 0.2 times of its initial value ? Given "log"_10 5 = 0.6990.

The half-life of a radioactive decay is x times its mean life. The value of zx is

Let C be the capacitance of a capacitor discharging through a resistor R. Suppose t_1 is the time taken for the energy stored in the capacitor to reduce to half its initial value and t_2 is the time taken for the charge to reduce to one-fourth its initial value. Then the ratio t_1//t_2 will be

Find the half-life period of a radioactive material if its activity drops of (1/16)^(th) of its initial value in 40 years.