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The radioactivity of a certain material drops to 1/16 of the initial value in 2 hours. The half-life of this radio nuclide is
Options
(a) 10 min
(b) 20 min
(c) 30 min
(d) 40 min
Correct Answer:
30 min
Explanation:
In 4 × T₁/₂, N = (N₀ / 2) × (1 / 2) × (1 / 2) × (1 / 2)
= N₀ / 16 4 × T₁/₂ = 2 hrs.
⇒ T₁/₂ = 30 min
Related Questions: - For a wave propagating in a medium, identify the property that is independent
- A sample of radioactive element has a mass of 10 gram at an instant t=0.
- Length of a conductor is 50 cm radius of cross section 0.1 cm and resistivity
- A sample of HCl gas is placed in an electric field of 5 x 10⁴ N/C
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Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- For a wave propagating in a medium, identify the property that is independent
- A sample of radioactive element has a mass of 10 gram at an instant t=0.
- Length of a conductor is 50 cm radius of cross section 0.1 cm and resistivity
- A sample of HCl gas is placed in an electric field of 5 x 10⁴ N/C
- Two simple harmonic motions of angular frequency 100 and 1000 rad s⁻¹ have the same
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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