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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: - An electron revolves in a circle at the rate of 10¹⁹ rounds per second.
- In insulators (CB is Conduction Band and VB is Valence Band)
- A tuning fork of frequency 512 Hz makes 4 beats per second with the vibrating string
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Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An electron revolves in a circle at the rate of 10¹⁹ rounds per second.
- In insulators (CB is Conduction Band and VB is Valence Band)
- A tuning fork of frequency 512 Hz makes 4 beats per second with the vibrating string
- Depletion layer contains
- The ratio of the numerical value of the average velocity and average speed
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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