Home
Class 12
PHYSICS
A freshly prepared radioactive source of...

A freshly prepared radioactive source of half-life 2 hours emits radiation of intensity which is 64 times the permissible safe level. The minimum time after which it would be possible to work safely with the source is :

A

6 hours

B

12 hours

C

24 hours

D

128 hours.

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

A radioactive element gets spilled over the floor of a room. Its half-life period is 30 days. If the initial activity is ten times the permissible value, after how many days will it be safe to enter the room ?

A radioactive sample of half life T_((1)/(2)) contains 1000 nuclei. How many members will be left after a time t=(T//8) ?

A radioactive element X with half life 2 hrs decays giving a stable element Y. After a time t , ratio of X to Y atoms is 1 : 15 . Time t is.

The half life of a radioactive isotope is three hours. If the initial mass of the isotope was 300 g, the mass which remained undecayed in 18 hours would be :