5 years ago in Physics 2009 Exam

15/16th of a radioactive sample disintegrates in 2 hrs. Mean life of radioactive sample is approximately,

[A] 30min
[B] 43min
[C] 21min
[D] 15min
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Ashish Tiwari
Ashish Tiwari - 2 months ago

Ashish Tiwari is saying 21min is correct answer

Ayush Kumar
Ayush Kumar - 2 months ago

Ayush Kumar is saying 21min is correct answer

Rishi Raj
Rishi Raj - 2 months ago

Rishi Raj is saying 43min is correct answer

Harini K S
Harini K S - 2 months ago

Harini K S is saying 43min is correct answer

Ankita noola
Ankita noola - 2 months ago

Ankita noola from Davangere, India is saying 43min is correct answer

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