## Question

### Solution

Correct option is  Here, A = N2 particles/sec and N = No #### SIMILAR QUESTIONS

Q1

The half life of The time taken for the radioactivity of a sample of to dacay to 1/6 th  of its initial value is:

Q2

The half life of 131I is 8 days. Give a sample of 131I at time t = o, we can assert that

Q3

The mass of one mole of electrons is

Q4

The increasing order for  the values of e/m is

Q5

The total number of neutrons in dipositive zinc ion with mass number 70 is

Q6

A radioactive nucleus is leing produed at a constant rate  per second. Its decay constant is λ. If No. are the number of nuclei at time t = 0, then  themanimum no, of nuclei

Q7

A radioactive sulestance has a half–life of four months three fourth of thesulestance will decay in

Q8

Half life of radium is 1600 yrs. Its average life is

Q9

What percentage of original radioactive atoms is left after four half lives

Q10

A radioactive element has half life period 800 yrs. After 6400 yrs what amount will remain