wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The half - life of a radioactive element is 30 min. The time interval between the stages of 33.3% and 67.7% decay will be ?


A

60 min.

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

90 min.

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

30 min.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D

45 min.

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C

30 min.


Fraction left after first stage =10033.3100=67.7100=23
Fraction left after second stage
=10067.3100=33.3100=13
During the time interval of two stages, the element decays by 50%. Hence, time interval =t12=30 min.


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Half and Average Life
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon