A radioactive element X with half life 2 h decays giving a stable element Y. After a time t, ratio of X and Y atoms is 1:16 .Time t is

Question

A radioactive element X with half life 2 h decays giving a stable element Y. After a time t, ratio of X and Y atoms is 1:16 .Time t is

A radioactive element X with half life 2 h decays giving a stable element Y. After a time t, ratio of X and Y atoms is 1:16 .Time t is
A. 6 h
B. 4 h
C. 8 h
D. 16 h

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

Related Questions

The half - life period of a radioactive element x is same as the mean life time of another radioactive element y Initially both of them have the same

2 Answers 5 Views

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

2 Answers 4 Views

1 mg redium has `2.68xx10^18` atoms. Its half life is 1620 years. How many radium atoms will disintegrate from 1 mg of pure radium in 3240 years ?

2 Answers 4 Views

In a sample of radioactive material , what fraction of the initial number of active nuclei will remain undisintegrated after half of the half life of

2 Answers 6 Views

Two samples X and Y contain equal amount of radioactive substances. If `1^(th)/16` of the sample Y , remain after 8 hours, then the ratio of half life

2 Answers 4 Views

Plutonium decays with half life of 24000 years. If plutonium is stored for 72000 years, the fraction of it that remains is

2 Answers 4 Views

A fraction `f_1` of a radioactive sample decays in one mean life, and a fraction `f_2` decays in one half life. Then

2 Answers 4 Views

The half- life of a first order reaction is 900 min at 820 k Estimate its half- life at 720 k if the energy of activation of the reaction is 250 kJ `"

2 Answers 6 Views

The half-life period of a radioactive element is 1 h. After 3 h, what fraction of it will remain?

2 Answers 5 Views

Sometimes a radioactive nucleus decays into a nucleus which itself is radioactive . An example is `""^(38)"Sulphur"underset(=2.48h)overset("half -life

2 Answers 4 Views

Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - c
`N/N_0=(1/2)^n=1/16`
`therefore` n=4
`t=nT_(1//2)=4xx2`=8 h

4 views Answered 2023-02-05 15:29