The half-life of a sample of a radioactive substance is 1 hour. If 8×1010 atoms are present at t=0, then the number of atoms decayed in the duration t=2 hour to t=4 hour will be

2×1010

1.5×1010

Zero

Infinity

Views: 892 students

Found 3 tutors discussing this question

Daniel Discussed

The half-life of a sample of a radioactive substance is 1 hour. If 8×1010 atoms are present at t=0, then the number of atoms decayed in the duration t=2 hour to t=4 hour will be

7 mins ago

Discuss this question LIVE

7 mins ago

Text solutionVerified

[b]N=N0(12)tT1l2

N o o f a \to m s a t t = 2 h r, N 1 = 8 \times 1010 (12) 21 = 2 \times 1010

No. of atoms at t = 4hr, N2=8×1010(12)41=12×1010

∴ N ⊙ o f a \to m s d e c a y e d \in g i v e n d u r a t i o n

=(2−12)×1010=1.5×1010

Was this solution helpful?

150

Report

One destination for complete JEE/NEET preparation

One destination to cover all your homework and assignment needs

Learn Practice Revision Succeed

Instant 1:1 help, 24x7

60, 000+ Expert tutors

Textbook solutions

Big idea maths, McGraw-Hill Education etc

Essay review

Get expert feedback on your essay

Schedule classes

High dosage tutoring from Dedicated 3 experts

Trusted by 4 million+ students

Stuck on the question or explanation?

Connect with our physics tutors online and get step by step solution of this question.

231 students are taking LIVE classes

Question Text	The half-life of a sample of a radioactive substance is 1 hour. If 8×1010 atoms are present at t=0, then the number of atoms decayed in the duration t=2 hour to t=4 hour will be
Answer Type	Text solution:1
Upvotes	150

The half-life of a sample of a radioactive substance is 1 hour. If 8×1010 atoms are present at t=0, then the number of atoms decayed in the duration t=2 hour to t=4 hour will be

Text solutionVerified

Practice questions from similar books