Home
Class 12
PHYSICS
The half-life of a sample of a radioacti...

The half-life of a sample of a radioactive substance is `1` hour. If `8 xx 10^10` atoms are present at `t = 0`, then the number of atoms decayed in the duration `t = 2` hour to `t = 4` hour will be

A

`2xx10^(10)`

B

`1.5xx10^(10)`

C

Zero

D

Infinity

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • NUCLEAR PHYSICS

    CENGAGE PHYSICS|Exercise ddp.5.4|15 Videos

  • NUCLEAR PHYSICS

    CENGAGE PHYSICS|Exercise ddp.5.5|15 Videos

  • NUCLEAR PHYSICS

    CENGAGE PHYSICS|Exercise ddp.5.2|15 Videos

  • Moving charges and magnetism

    CENGAGE PHYSICS|Exercise Question Bank|20 Videos

  • NUCLEI

    CENGAGE PHYSICS|Exercise QUESTION BANK|59 Videos

Similar Questions

Explore conceptually related problems

If the half-life of a radioactive sample is 10 hours its mean life is

The half life period of a radioactive substance is 10 hours. How much will be left after 4 hours in 1g atom sample ?

Half life of a radioactive substance is 60 min. After 3 hours, the fraction of total number of atoms that have decayed would be

The half-life of a radioactive substance is 48 hours. How much time will it take to disintegrate to its (1)/(16) th parts ?

The half life of radioactive substance is 1.1xx10^7 s. What is the decay rate for 4.4xx10^15 atoms of the substance ?

The half-life of a radioactive substance is 20 min. The approximate time interval (t_2 – t_1) between the time t_2 when 2/3 of it had decayed and time t_1 when