Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2006PhysicsNuclear PhysicsActual

In a radioactive material the activity at time t₁ is R₁ and at a later time t₂ , it is R₂ . If the decay constant of the material is , then:

Options

  1. A(R₁=R₂ )
  2. B(R₁=R₂ e^ - (t₁-t₂ ) )
  3. C(R₁=R₂ e^ (t₁-t₂ ) )
  4. D( R ₁= R ₂ ( t ₂ / t ₁ ) )

Correct answer

B. (R₁=R₂ e^ - (t₁-t₂ ) )

Step-by-step solution

R₁=R₀ e^ - ₄ and R₂=R₀ e^ - ₂ aligned R₁ R, & = e^ - ₁ e^ - ₂ & =e^ - (t₁-t₂ ) R₁ & =R₂ e^ - (t₁-t₂ ) aligned

Practice Nuclear Physics on Quantrex Academy →

More from Nuclear Physics

Consider the following nuclear fission reaction ₀^1 n + ₉₂²³⁵U _Z^A Y + ₄₁⁹⁹Nb + neutrons . If 4 neutrons are released during the fission process, then A and Z are 2026Two spherical nuclei have mass numbers 216 and 64 with their radii R₁ and R₂ respectively. The ratio R₁ R₂ is 2026At time t = 0 , the activity of a radioactive substance is 1600 Bq. At t= 8 s, the activity remains 100 Bq. The activity at t = 2 s, the is 2026A radioactive nucleus ₉₂X²³⁵ decays to ₉₁Y²³¹ . Which of the following particles are emitted? 2026In a given reaction, ^ A _ Z X ^ A _ Z+1 Y ^ A-4 _ Z-1 K ^ A-4 _ Z-1 K the radioactive radiations are emitted in the sequence of 2026When a nucleus in an atom undergoes a radioactive decay, the atomic number and/or mass number of the atom 2026A common example of ^- decay is ₁₅ P ³² ₁₆ S ³² + x + y Then x and y , respectively, stand for 2026For a radioactive nucleus that undergoes ^+ decay, which of the following CANNOT occur? 2026 Full Nuclear Physics list All NEET PYQs